Just a quick note — if you are using media-tv/ivtv, be sure to load your I2C and Video4Linux drivers as modules in the kernel, or they will most likely not work. I’ve known about that for a long time, so I assumed it was common knowledge, but I see reports of people not doing that and running into problems. Sorry about that. I added a warning in the 1.0.x ebuilds of IVTV. :)
Also, ivtv-1.0.2 is in the tree now, for kernels >=188.8.131.52. Here’s the tiny Changelog.