As an American, there are some good American comedies, but not recently. Watch some older movies like "It's a Mad, Mad, Mad, Mad World" or "The In-Laws" (The one with Peter Falk and Alan Arkin).
However, I will say that British music IS a lot better than our music. In the 60's, you had the Beatles, The Animals, The Stones and The Strawbs, to name a few. In the 70's you had Genesis, Pink Floyd (to be fair, they started in the 60's, but they really took off in the 70's), YES, ELP, Fleetwood Mac, Rod Stewart, Queen and King Crimson, to name a few. In the 80's you had Flock of Seagulls, Bonnie Tyler (she's Welsh, but you get what I'm saying), David Bowie, Eurythmics, Tears for Fears and others.
Even today, music standards being as low as they are, you gotta admit that English songs like these are still better than most of these crappy, copy/paste American songs.