Apple specs say 7 hours for video. I tested that out today. Screen 50%, audio 50%, wifi OFF I got 6:23 when the 20% warning came on. I got another 15 minutes before it shut down. not quite 7 hours, but pretty close. I tested my 2G touch when it was new and got 35 minutes MORE than the rated time. The 4G goes longer than my 2G did, but it doesn't go as long as Apple claims. Does that bother me? no way--I know battery life ratings are a crapshoot. so...how long does your touch run videos? before it hits the 20% warning?