These iconic pop B-sides from the 20th century became legendary hits, and some of them even outdid their A-sides.

Sometimes the underdog comes out on top. These classic rock B-sides ended up being more famous than their A-sides in the end.

The reunion to end all reunions is set to take place this Friday. That's when the Britpop band Oasis gets together for a five-month world tour kicking off in Cardiff, Wales, officially marking the end ...