Here's a link to a blog about a Porn Star Karaoke Night wich mentios Eliza as attending. Again out with Seth McFarlane.
http://www.tonybatman.com/seth-slaye...ter-psk-night/
Heres the part mntioning Eliza:
Also on the scene: Mainstream celebrities Seth McFarland, creator of “The Family Guy,” and “Buffy The Vampire Slayer” actress Eliza Dushku, who sat at a center table and joined in on some of the karaoke action.