Name: Damsel
Effect: Health Restore
http://www.mediafire.com/download/r8v80l0ld86ld99/Spelunky.mp4
Weird, I feel like this might have been listed before, but a search brings up nothing - though it's not really that obscure a game so I'm guessing some people might already have seen this.
Spelunky is a platformer where you play as an Indiana Jones sort of character (though there are alternative sprites) - during the game, there are "Damsels" that you can pick up and bring to the exit and if you do, they'll kiss you for an extra health when you finish the level.
Short and sweet?