THEME: entries with 3 U's
GOOD ONES: Whom "I'm in love with" in an Ames Bros. song YOU-YOU-YOU [love this one because it not only has 3 U's but also is pronounced so]
BTW: SCRUPULOUS and 3 U's, and
unscrupulous has 4. Wonder if there other words with as many.
U.S. state with its own elec. power grid TEX [the abbrev. for decades has been TX, so I'd clue it "John Ritter's dad" or "Kind of Mex?]
Rude, annoying one, in slang BOZO [not in my understanding of the slang; a bozo is a fool or dope with no hint of rudeness]
Hot coffee server URN [I couldn't help thinking it meant a waitress, but I guess that makes me a DOM (oddly not used since I became one)]
RATING:

[for the theme more than the cluing and fill]
Three grins = Loved it; Two grins = Enjoyed it; One grin = A bit bland for my taste; One teardrop = Not much fun