Overrated:
Money In The Bank - After the 4th one, they all sucked. They added too many competitors and theres only so many spots you can do in that match. I still enjoy them for what they are, but I'd honestly wouldn't be mad if the did away with it all together. I'm glad it's no longer a part of WM.
Elimination Chamber - It's a cool match, but as like every other WWE stipulation match it has been ran in to the ground. Having a match like this twice on the same card is overkill, it's even worse when you do it every year. This is the one match I think is hurt the most by overuse. It could be awesome if done sparingly.
Underrated:
Lions Den Match - I think there have only been two of them, but they were both really cool.. especially the first. It being in a completely different venue than the rest of the show was dope, and they had some nice spots with the cage.
Six Pack Challenge - I remember loving this match when they did it back at Unforgiven 99. Something about 6 dudes in one match for the strap seemed epic and important.
3 Stages Of Hell - I'm kinda glad they didn't overuse this match, but when they did do them they were pretty cool.