Actually, I disagree with 3rd Party video games on Nintendo's systems... but before you freak out let me tell you I dont think they're ALL bad, there are exceptions.... let me explain:
If you take a look at the games for the Nintendo DS, what games are available for the system.... Ridge Racer DS, Rayman DS, Star Wars Episode III, **** even Splinter Cell, which I have never played but from the looks of it on the X-Play review I saw i thought it deserved a 0 out of 5.... but anyway, they are all crappy games, and there are more and more that i could name, and they are ALL 3rd party games.... now, an exception in these would be Castlevania, that game is amazing, but all the other games that 3rd party creators try to shove onto their systems are stupider ideas than Dance Dance Revolution Cereal. Look at when NINTENDO makes their games, they make them good, i think Mario Kart is going to be DS's best game when it arrives, not to mention currently available games like Kirby's Canvas Curse which makes the stylus extremely innovative and is fun to use, and they've got more on the way.
Now, as far as console gaming goes, there are your exceptions again, such as Resident Evil 4, and Viewtiful Joe, but if you take a look at games that Nintendo takes time to create, such as the game that we're all registered to a forum for, has never gotten old. More games, like my favorite, is the metroid series, i thought turning Metroid into first person was the stupidest idea coming from Nintendo, but they made an incredible game.
By the way, I realize that its just not ONLY nintendo making their games, but are you seeing my point?
With the revolution, Nintendo is making this wacked out controller that no one has ever tried before, and thats why I think Nintendo is going to know what to do with it, its theres, they have their idea's for it, and they know how they're going to make gameplay unbelievable. It's hard for me to keep my pants dry when i'm thinking about games like Metroid Prime 3 with that controller, they're going to be that cool.... but there are some 3rd party developers out there that could ruin the Revolutions Reputation, just how they ruined it for the DS. I dont want to see any ****ty Tekken games, and I dont want to see any horrible Full Metal Alchemist games on it either... but... i should probably wrap up my rant...
So... thats just my opinion on 3rd party developers... they're Bull****. There are exceptions, but all the others just piss me off.... i dont even need to start about how Capcom ruined the MegaMan series...
EDIT - Yeah.. I was going to comment on 3rd party **** for Xbox and Xbox 360, but pretty much the same applies, though I do think Nintendo is more creative with their games.