Alright, let me state this straight out of the box. The moment I went to the Humble Bundle Page and saw Warhammer Fantasy Roleplay was one of the bundles I bought in for 30 bucks without waiting. Yes, I have WFRP 1e, 2e, 2e, and 4e. This gives me all but the aberration of 3e as core rules in PDF and so, so, so much more.
Have you played Warhammer Fantasy Roleplay in the past? Then you know you want this. Never played it? Then you need this. Playing WFRP 4e? You can get the Core Rules, the Starter Box and so much more. Really. I can't say enough. So I'll stop right here ;)