As I wrote in reference to "
How I Met Your Mother," the response here suggests that a significant percentage of viewers just aren't interested in sitcoms these days. You're not going to get a better one than this, and more than half of the posters thought it was dumb, don't intend to watch it again, or both? Just don't bellyache when the networks give you unscripted programming or six more procedurals instead; essentially, you asked for it.
Ian, your posts are usually very wise, but no, the premises of "Earl" and "Quantum Leap" are not at all alike.