I'll give you one better, I'll state my favourite and my least favourite:
Favourite: Teenage Zombies (DS)
Considering that I only paid £4 for this game, it was a pretty good platformer. Sure it may have been a bit easy for those "hardcore" platform gamers, it's a great introduction for those who haven't played one before or for youngsters, especially considering you have to think your way through the level rather than just run from one side to the other stomping on stuff. And you can make it more difficult by implementing your own rules, like not eating brains (which act like health packs).
Least Favourite: Dennis the Menace (Gameboy)
One of the poorest platformers I have ever played. Let's start by mentioning the terrible controls which will cause you to continue momentum forwards after you jump. May seem realistic but not very useful when many of the platforms in some levels are exactly the width of your character. Rocking the d-pad furiously is the only way to give yourself any chance of success with these jumps. Secondly, the levels all have a time limit and a very strict one at that. You need to find a certain number of ...things to progress so if you get lost AT ALL, you're screwed. The enemies kill you quickly too and while you have 3 weapons, only one will kill any particular enemy, the others do nothing. Oh and the game gives you no clue which does which, a very big problem considering how there are hundreds of different kinds of enemy. The game is bloody long too (3 hours is the longest I've gone without a Game Over screen, I never have finished it) and there are no saves or passwords anywhere. Oh yeah, and you only have 3 lives with few opportunities to get any more.
