By Ken Tucker
Updated March 13, 2010 at 02:58 PM EST

Jim Gaffigan appeared on David Letterman last night, and reminded me once again why he’s always reliably funny. He can do, as he does here, four minutes of material about hotel indoor pools and never leave you feeling he wishes he could throw in a four-letter word just to sell a joke:

I like Gaffigan’s on-stage personality as much as I like his jokes; that’s important for a stand-up comic, too.

What do you think of Gaffigan?