Only U.S. state whose flag isn't rectangular

Answer: Ohio

"Toy Story" cowboy

Answer: Woody

1804 duel winner

Answer: Burr

Revenge-seeking group in 1984 film

Answer: nerds

O'Brien of late-night TV

Answer: Conan

Piano virtuoso Watts

Answer: Andre

" ___ Again (Naturally)" 1972 #1 song

Answer: Alone