People who can't make choices in the cafeteria
Circle I Limbo

Incessant talkers
Circle II Whirling in a Dark & Stormy Wind

Cheery morning people
Circle III Mud, Rain, Cold, Hail & Snow

Cable TV/Internet repair schedulers
Circle IV Rolling Weights

Tailgaters (not the picnic-ing kind!)
Circle V Stuck in Mud, Mangled

River Styx

People who don't know the difference between "accept" and "except"
Circle VI Buried for Eternity

River Phlegyas

WalMart
Circle VII Burning Sands

General asshats
Circle IIX Immersed in Excrement

Spammers
Circle IX Frozen in Ice

Design your own hell