Stampida springs to mind, it has been mentioned before; personally I think it's quite possibly the worst woodie standing, others would think it's fantastic. If it wasn't for the train change maybe my views would be a bit more fair.
Rita is definately another contendor; again I loathe it. People speak of this so called "airtime" found on Rita, yet I've been on the front, back and centre and all I felt was myself being rattled all over the place and mediocre forces pushed onto me. What's the fun in that? And the launch is slap-bang average, not too tame, not too intense, it holds nil for the coaster.
On the other hand, you have Colossus. Which I actually enjoy quite a lot, I wouldn't come to say it is the best coaster I've been on, but after reading a lot of negative reviews it actually surprised me - big time! It is beautifully themed and landscaped, the first half is fairly powerful and paced, the second half being very disorientating and unique with some nice hang-time. Yes, Colossus is rough, but to me it does enough in the experience for me to ignore that factor; I take Rita as an example (Launch, turn, bang, bang, turn, bang, bang, turn, bang, bang, break run), Rita does nothing but literally launch and bank round poxy corners.
[/Rant ended]