turnaround. chair.

The only thing that moves on the Turnaround Chair is the backrest, which swivels freely through 360 degrees.  What possible good could that do anyone?  Let me tell you...
 
front. to. back.
You know That Guy who always sits in the chair the wrong way, draping his arms over the back?  Hint: In the office he's the overgrown, obnoxious frat boy.  In the movies, he's usually the bad guy (who often assumes this position while gloating over the captive good guy).  This chair was made for That Guy. 
 
galoot. decorum.
Normally it's not considered polite to sit in a chair back-asswards, but That Guy won't have to worry about getting on the wrong side of Miss Manners as long as he's sitting that way in the Turnaround Chair.  It's what he's supposed to do.  They even made the backrest so it doubles as an armrest, so That Guy won't look too galootish when he does it.
 
okay. really.
Okay, maybe the chair wasn't made specifically for That Guy, even if it is well suited to him. Officially the manufacturer, Nienkamper, created the chair for "settings where people interact and socialize, such as meeting and breakout rooms, cafeterias and waiting areas."  I.e., it's not a 9-5 seat, but it is a fun seat.
 
paying. for. it.
Since That Guy will probably end up sitting in the Turnaround Chair, get him to help pay for it.  It starts around $1,100.