well my room mate just bought a michael kelly hybrid special which is amazing. i think its around $600. not a huge semi-hollow cause its fairly thin, unlike an artcore or gretsche (sp?).

other than that, uh... *moved to EG*
PRS is now making a semi-hollow model. I tried it at samash and it sounded so freaking nice through a blues jr.
White falcon? ...lol
"We weren’t too ambitious when we started out. We just wanted to be the biggest thing that ever walked the planet."
-- Steven Tyler
If you don't want to spend much, the Epiphone Dot Studio would probably work for you. $250 retail price, I've been absolutely satisfied with mine.

depending on how high you want to go, check the higher-end Epis and Ibanez, maybe even Hagstrom and Gretsch.