Just watched "The Descent", and I must admit that it disappointed me quite a bit. I don't find "monsters" particularly scary or frightening anymore, especially not when they're as cartoonish and unrealistic as they were in this film. Also, as RiA pointed out, the characters were extremely bland. On par with the other "cave horror" movie I've watched this year; "The Cave". 5.5/10, tops.
Edit: I might as well post my thoughts on some other films from 2006 in this thread.
The Hills Have Eyes: Far from scary, and merely OK. The whole "weird monsters killing a lot of people" thing really isn't my cup of tea anymore. I suppose it's a decent macabre action movie, but not a good horror flick.
Beerfest: Surprisingly funny, featuring RC's very own JayKeeley as a male gigolo/beer sports champion. I tend to dislike movies like this, but I was pleasantly surprised by this theatrical homage to beer.
Dirty Sanchez: The Movie: Absolutely brilliant, brainless humour. I'm a huge fan of the series (somehow the Sanchez blokes seem more genuine and just downright funnier than the Jackass guys, who I'm also a fan of), and this is possibly even better.
Jackass 2: Where the Dirty Sanchez movie had an actual storyline (storyline's maybe stretching it a bit, but there's definitely a red line throughout the movie), this is just a collection of more or less funny stunts. Enjoyable.
Miami Vice: I suppose it was decent enough, but lacked a bit in the "cool" department. OK storyline and nice settings, but I'm not sure if I'll watch it again.
The Devil Wears Prada: My (ex) girlfriend dragged me to the theatres to watch this, and I openly admit that I found it perfectly acceptable. Sure, it's a girl's flick, but it was above average, and quite funny at times.
Snakes On A Plane: Silliest concept in ages, and I believe the directors and Big Sam himself were perfectly aware of this fact. Instead of taking itself seriously, the film offered some decent action with its tongue firmly placed in its cheek - thankfully.
Rollin' With The Nines: I really enjoyed this British gangsta film. "Rollin With The Nines" can be compared to "Lock, Stock And Two Smoking Barrels" at times, although it lacks some of the elegance and finesse of the latter. Still, this is one of the better films I've seen this year, and it's highly recommended.
Pirates Of The Caribbean: The Dead Man's Chest: Not as good as the first, but still an excellent adventure film. Top notch entertainment, and one of the finest films of 2006.
I've yet to watch "V For Vendetta", "Blood Diamond", "Borat" and "Lucky Number Slevin".