also from Sci Fi Wire (and i'm reposting the whole thing because i think it's worth more than just a link):

The special musical episode of UPN's Buffy the Vampire Slayer rated well in its Nov. 6 airing, the network reported. The all-singing, all-dancing episode, "Once More With Feeling," ranked No. 3 among persons 12-34, adults 18-34, teens and female teens, UPN reported.

The Buffy episode also ranked No. 2 in its 8-9 p.m. timeslot among males 12-34, men 18-34 and male teens, beating The WB's Gilmore Girls, ABC's Spin City, CBS' Jag and NBC's Three Sisters, UPN reported.