I agree with SJS. Like the idea, but could do without YOSEMITESAM and SILICONEMOLD - too close to the original word (identical in the case of Yosemite Sam). I don't mind IDEATHIEVES. Also, I have been watching reruns of "Life on Mars," which starred Jason O'Mara, so I might be biased in his favor. I think that he's fine, but you should make sure to give an easy cross on the M so people don't guess that his name is O'Hara.
I think that if you're going to include the revealer, which I like, and you're looking at a daily, which I think you are, you could get away with only three theme entries (and would struggle to fit in many more anyway). ANNAPAQUIN, JASONOMARA, and IDEATHIEVES would work for me. I especially like that I they are no-brainer valleys (I don't think of Yosemite as a valley, but as a national park). I'd probably go with those. There are even some fun letters (J, Q, two V's).
Good luck with the fill,