Hmm.... my dad and I seem to work on a two way street. I can't count how many times I've called him to be like "check out this band" and he says he was going to tell me the same thing...
But, he's gotten me into a lot of 'older' bands/artists, like Jim Croce, Supertramp, GNR, Tom Petty, CCR, Twisted Sister, Tracy Chapman, Elton John, etc... and I'll never forget the day he brought home the yellow tape of BNL... that was a great day
I've gotten him hooked on Ataris, Simple Plan, Our Lady Peace, Sister Hazel, Barlow, Great Big Sea, the Watchmen, etc...