The List
There are 64 5 letter words with U as the last letter. The highest scoring is KUDZU at 19 points in Scrabble. 29 carry three or more vowels, which makes them useful for dumping a vowel-clogged rack.
ADIEUAHURUBANTUBATTUBAYOUBIJOUBITOUBOYAUBUCHUBUCKUBUNDUBUSSUCENTUCHIRUCORNUCOYPUFICHUFOGOUFONDUHAIKUHINAUHOKKUJAMBUKANZUKAURUKAWAUKOMBUKONBUKUDZULASSUMAPAUMIAOUMUNTUNAIRUNANDUNIKAUNOYAUOTAKUPAREUPENDUPERDUPIKAUPILAUPOILUPONZUPOYOUPRAHUQUIPUSADHUSAJOUSAMFUSHOYUSNAFUTATOUTENDUTUKTUUHURUURUBUVERTUVIRTUVODOUVOULUWAGYUWUSHU