This was a really funny episode, although I felt some of it was a bit long, what with no subplot and no kids. Actually, just the beginning dragged, but the PBS joke was funny.
The rest of the episode was solid.
Maybe it's okay since Quagmire himself isn't married. I find it a bit...ironic...well, poetic justicey...that Peter says Babs looks like someone farted in a shoe whereas young Babs looks a lot like Lois, so she's going to look like her mother one day.
That...depresses me.