2D game graphics programming

I know some C++ and Java, but I've only ever done text stuff with them. Which language, and what libraries, would you recommend for making 2D game?

With sprites and collision detection, basic physics for side-scroller type action.

C, SDL.

http://www.metanetsoftware.com/technique.html
Good tutorials on collision detection and physics, made by the people who made that one ninja Flash game.