Stay with me for a moment here, folks.
In anticipation of Captain America: The First Avenger arriving into theaters, Marvel commissioned Big Pixel Studios to produce a Flash-based game called Captain America: Shield of Justice that's rather blatantly (in a great way) flexing its Mega Man and Super Mario Bros. influences.
Just playing through a few stages, I noticed Captain America blowing up into circular digital bits ala Mega Man, a familiar sound and hand/feet positioning while jumping in the vein of our friend Mario, a noise that sounds an awful lot like Super Mario Bros.' coin-collection sound effect and a rather amusing way to introduce the boss battles.
I'm sure there are plenty more to spot. Feel free to tell me how many I missed, commenters!
Goofy influences or not, for what it is--a Flash game that won't take you very long at all to play through--Captain America: Shield of Justice is a pretty fun, old school way to waste a lunch hour. And now I really want to play Mega Man 2.
If you missed it before, play the game right over here.