Help me recognize a song?

sounds like super mario d:

There are some pirates out there that use the same music in their credits

Contra game soundtrack?

Spiderman GBC boss theme?

song in the background

Do you really want that EXACT song or any similiar like:

http://www.youtube.com/watch?v=O_RMpL7FxIM

http://www.youtube.com/watch?v=byqO04dxewY

http://www.youtube.com/watch?v=4g7rFk0aJgY

this is all chiptune music. Search for Dubmood, he has some really nice tracks.
Dunno if this helps :)

ask the guy in the video?

ask Shazam (?)
extract the song from video (jdownloader or any tool like that can do the job)
then look for a site which recognises songs
profit!
:D