Bea turned out to be Larry David's real mother on a 2005 episode of this series
... Too bad 
Larry didn't have Bea Arthur play his mother more in the series than this one 
episode,... [DOC] [TLE] Curb Your Enthusiasm: Season 5 - Rotten Tomatoes [PAR] Curb Your Enthusiasm: Season 5 (2005) ... Average Episode Score: N/A ..... "
Seinfeld" co-creator Larry David (playing a fictionalized version of himself) is as 
..... Rick (Rob Corddry of The Daily Show), and he turns out to be a pretty good 
guy.