Dragon Age: Origins is a fantastic game, and probably my personal favorite BioWare offering. The combat however is not for everyone - at the easiest difficulties it's boring, and at the hardest, highly tactical and a lot of fun, but only IF you're into that whole pausing every other second thing. I guess the same could be said for most BioWare games, all the way back to Baldur's Gate (which is another one I recommend if you don't mind that it came out in 1998.)
Dragon Age 2 is ... not so fantastic. But some people like it.
As for ME3, I'll be participating in the boycott of the title. Day-one DLC is wrong, and as much as I love the series, I don't love it enough to reinforce game studios to continue this sort of trend.