Here's one more note for anyone coming in from Prehistoric Times! Thanks for coming, and please fire off an email to let me know you made it, so I'll know if my advertising dollars were well spent! Also, reading the comic from the beginning is highly recommended. :)
For all the rest of you, I just came across these British ads for milk featuring cavemen and dinosaurs--maybe you've seen them before, but they're brand-new to me and I'm quite entertained by them. I've been watching them on Youtube, but the director of the ads has high quality videos on his website, if you don't mind Quicktime files.