Given that Mr Garris has directed at least 7 of Stephen King's properties, is it in order to ask what people think of his work? Having seen maybe 4 or 5 of the pieces he has directed, I find them to be OK - no better, no worse. He is better than many, but not even close to the best. Journeyman stuff in my view.
I admire his determination to keep translating King to the screen, especially 'difficult' ones like 'The Stand' or the remake of 'The Shining', but the results get progressively worse. I think he peaked on 'The Stand' and it was interesting to see a different version of 'The Shining', but since then it's been mostly disappointing to me. I'd like to see him take a shot on more 'dark fantasy' novels, 'The Stand' clearly has more going for it than the other ones.
I don't think Garris is a talented director. His stuff comes across as too sensationalist and überdramatic, like old Movie-of-the-Week scripts. He gets good talent - most folks like Mr. King's works well enough to want to bring them to life on the screen in some way - but his direction is messy and sub-par. I'll take Frank Darabont any day of the week over Mick Garris.
A few of them -- The Stand, The Shining, even Sleepwalkers -- have good moments, but none of them fit my definition of quality filmmaking. I am not a fan, sad to say...and I hope Garris has adapted his last King story.
I always feel like a prick for saying so, though; Garris seems like a hell of a nice guy. I especially enjoy listening to his commentary tracks, even though I don't like the movies themselves all that much.