The continuity errors absolutely take nothing away from this show, for me. Yes, they're easy to catch, and yes they actually register in your head, but the show is so transcendent it's completely above it all. I usually watch a new episode with my mouth totally open.
If it goes 5 more seasons it'll be the greatest thing on tv, ever. The Larry Sanders Show is the current champ.
Louie needs an Artie--that's my only criticism.