IS CALIFORNIA READY for Dennis Miller as its next United States senator? Laugh if you like, but some Republican strategists (including a few who just sent a certain movie star to Sacramento) see Miller, the sardonic comedian whose late-night talk show lasted just a little longer than Wesley Clark’s Iowa campaign, as wholly capable of defeating incumbent Democratic Sen. Barbara Boxer next year. Yes, that’s the same Dennis Miller who does commentary Friday nights on Fox News’ “Hannity & Colmes”–and also has a recurring role on Fox’s “Boston Public.” The same Dennis Miller who was unceremoniously drop-kicked from ABC’s Monday Night Football. The same comedian and author whose “Dennis Miller Live” ran for nine years on HBO, following a turn on “Saturday Night Live” as the Weekend Update anchor.