Halle Berry gets this honor now that she has a TV show. I don't know her age, other than that she is well past 40 and won't look it up but she is either already or soon will be the hottest actress over 50 with a TV show, assuming her show lasts long enough.
Home Theater - OTA TiVoHD/1.16TB/NSZ-GS8 GTV
MBR - OTA TiVoHD/660GB/NSZ-GT1 GTV
Den - OTA TiVo Premiere/2TB/NSZ-GT1 GTV