Here is a roundup of the worst-behaved celebrities to stop in over the years:
1) Reality star. Was on a huge long-running hit reality show for MTV that was a spin-off from another MTV reality show. Currently single, and trying her hand at a hosting gig. By far the worst-behaved person to ever enter the bar. Came in with her publicist, and refused to look at or talk to anyone, except the publicist. No one was allowed to look at or talk to the reality star (per the publicist's instructions). All drink orders went through the publicist. "Reality Star would like a vodka cranberry."
2) This actor formerly starred in a huge franchise that still has a rabid fanbase. Drinks were comped as a courtesy. Actor was obnoxiously drunk during his visit, and left zero tip.