This episode was hilarious. The bit on the phone was hysterical, with the "050505" party and the tsunami funraiser, and the song parodies were quite funny too. Steve Carrell really "brought it" for this episode and I laughed at practically all the jokes. I also liked Dwight, as the sound guy. Pam getting drunk on other people's drinks was funny too and Jim is just cool.
So, I give this episode a 9.5 for being just ...well being funny.
You should totally watch it. :D