Overall I mainly watch sci-fi ( <3 Fringe), but I’ll watch dramas as long as they have something unique about them. I like Criminal Minds, NCIS, and SVU - but the guiltiest pleasure of all is Leverage. Not the best actors, not the best writing and the plots can jump the shark more often than not - but the characters just work. It’s one of those rare shows where the plot can be the last thing on your mind, you just want to watch the characters interact with each other.
I really liked Supernatural for a while, but it got to the point where it went a little far for me (I got deeper into religion around the time, Muslim btw) and stopped watching - I think around S4 or S5. Really well written though and from what I remember the acting just got better every season.
Haven’t tried Haven, though I’ve been tempted since Edge has been making guest appearances. I remember hoping SyFy would pick up Heroes. Tried to watch Alphas but didn’t get through the first episode due to company. Perhaps I’ll try again at some point.
Let me also add that I was pleasantly surprised by Falling Skies. That’s a friggin’ good show.