Well... as you all might know, I fell in love with the Playstation2 emulator Pcsx2 not that long ago.

It is one of the best PS2 emulators as of this date, it has a high compatibility (meaning a lot of games can run flawlessly on it) and just a few games show graphical errors and an even minor part (maybe 5 to 10 percent of all games) won't run at all or only show intro's.

It runs Kingdom Hearts 1 and 2 perfectly as well as other PS2 games (like Okami or FFXII for example) that I pop in (PCSX2 can read and run legal PS2 discs in almost every DVD player.)
The games also run at a good speed (you'll need quite some CPU power though).

After that I found out there was also a Gamecube and Wii emulator called: Dolphin.
I've seen Mew-tew (member here on DA) playing Super smash brothers melee with it and I thought: "Hey, that looks awesome... lets try it out!"

So I installed the emulator and found out that it couldn't run the GC-disks from my DVD-player like PCSX2 could. "No problem" I thought, "I just download the games I already own then". So I downloaded Zelda Twilight princess and Super Mario Sunshine (both games which I own to be on the safe-side.) and started playing.

Zelda Twilight Princess:
I was amazed to see that it could run Zelda Twilight princess at a good decent speed while flawlessly showing all the details in the water just as it would do on the original Gamecube. I was hyped as hell when I saw it and started to play it... then I came to a little big problem.

Namely, the game crashes... and it not just randomly crashes, but it seems it crashes everytime the emulator clears its Ram cache. The crash error namely comes directly after the emulator says: "Cleared ram cache".
Some of you may think: "Then just turn that off in the emulator"... Well... it's not that simple, since there is no such option to turn off in Dolphin.

So the game works, with great graphics, at great speed... but it crashes at the point the Ram cache is cleared... which sadly happens a lot!
(especially when you walk into a new area.)

Super Mario Sunshine:
When I popped this game in, I couldn't believe my eyes. It was Super Mario Sunshine, just as great as on the Gamecube and just like Twilight Princess ran at an even more decent speed!
This game didn't suffer from weird crashes or anything like that... it was Super Mario Sunshine at its best... well... 'almost' at his best.

Since I discovered that even though Super Mario Sunshine doesn't have any major errors, there is one small error in the game that makes it virtually unplayable.

You know that in Super Mario Sunshine you can spray all the paintgoo away in order to make a path for you to walk on?
Well... the Paint goes away, but when you try to walk on the spot you just cleared you slip as if you never sprayed the paint away. For some reason the paint is still there but it's invisible, so when you try to walk over it you start slipping and create paint spots (no matter how unlogic it sounds)

If you keep spraying the spots where paint has been it wil just show the watery cleanse particles over and over again (it will never stop however). So basicly that means you can't play through the entire game because you sometimes need to clear paths of paint in order to advance!

Compatibility list:
then I decided: "Hey! let's look at the compatibility list on what games 'are' fully playable" ^_^
The list was absolutely terrible! O.o
A lot of well-known games had the Blue symbol. (which means, it will run, will show in-game graphics but will crash at some point or has systematical difficulties so you can't advance\finish the game without running into trouble.)

Comparing the list to PCSX2's compatibility list shows a great difference between them in the number of fully playable games.
To think that most NES, SNES, N64, PSX and SEGA consoles (except for Dreamcast) don't show any errors (or maybe graphical glitches in very rare cases).
It's almost as if the newer the console, the harder it is to emulate it perfectly.
I can understand it though in both terms of security (copy-prevention) and playability. (for an emu you need atleast double the system specifications on your Pc than what the console is capable of.)

Also, most of these emulators are created by hobbyists (code-junkies, hackers) so high\perfect compatibility is almost out of the question because every person has his or her own way of coding and with emulators there aren't any restrictions on 'how' you should code them, which means: One person codes efficiently while the other person codes a little sloppy and will eventually run into problems with the script of person nr1 and because there are usually 5 to 10 people working on such a big project each with their own individual experience... There is no way it can be 100% failproof without atleast a good start or plan.

So unless they have a good solid plan\workway on making a solid and stable emulator... I highly doubt they will be fully perfect. PCSX2 on the other hand is coming a long way and shows that perfect PS2 emulation on a Pc isn't just a kids dream but can be done if done correctly.