The fifth season of The Hills debuted last night, and the fireworks certainly flew when Heidi Montag - urged by Stephanie Pratt - decided to crash Lauren Conrad's birthday party.

Meanwhile, Spencer Pratt flirted with a cute waitress during a guys' night out, only to have Stephanie's ex-boyfriend Cameron rat him out via text. A pretty serious fist fight ensued.

All in all, a solid start to LC's swan song season of the reality TV staple.

Follow the link for a recap of The Hills ...

Steve Marsi is the Managing Editor of TV Fanatic. Follow him on Google+ or email him here.