El Mahdi
Muad'Dib of the Anauroch
I've been a staunch supporter of the "say 'Yes' or roll the dice" philosophy for some time. D&D may have been late to the party, but I'm glad it showed up.
Yup. Pretty much used this for some time also (at least the last 10 years). I've seen this concept covered many times (I think I saw it in old issues of Dragon magazine and in articles on WoTC website) long before 4E was conceived. I don't think D&D was late to the party, but 4E seems to be the first time they have codified it in the rules.
I picked at least every game (even though I'm not using 4E). I didn't really DM much during 2E, but with 3E, I used this concept a lot (and still do).