I've played the majority of my platformers during my nes and snes days, but ever since I've gotten into rpg's , playing platformers has been pretty much been on the backburner but instead of naming platformers that are pretty much well known I decided to pick out a few platformers I think people should definitely try out.
One of my favorite platformers for the nes is an awesome game known as Power Blade. It is pretty much a clone of mega man but it is actually a pretty awesome game and would recommend anybody give it a try. The music is pretty good, the weapons and levels very well designed and the bosses are actually pretty fun to go against.
Here is a gameplay video of it:
Another platformer I absolutely adored is Little Nemo: The Dream-master. It is a very difficult platformer but it is actually really good despite its difficulty.
For the snes, it is pretty easy to pick out the great platformers for that system especially when you have games such as Super Metroid, Donkey Kong Country, Castlevania IV, and Mega Man X.
I think the Disney Games did an excellent job with the platforming formula. Games such as The Lion King, Aladdin, and my personal favorite Magical Quest starring Mickey Mouse are all excellent platforming games.
I can't say I've played much platforming recently except for the scatter game on the ds, such as castlevania, or kirby super star ultra.
Jam it back in, in the dark.