Torchlight is often seen as a Diablo clone, and a underdog of the genre.
Although from what i have read and seen from a couple of reviews i have high hopes for this game! Torchlight 2 is currently in Beta phase and is available for pre-purchase from Steam and is scheduled to be released sometime in the Summer of 2012.
Here are some lenghty co-op playthroughs by the YoGsCast.
YoGsCast also interviewed Max Schaefer the CEO of Torchlight 2, Who has also worked on Diablo 1 and 2, He seems like a pretty cool guy which makes me want to support the game even more.
The classes of the game seem quite interesting and from what i can see is that you can play a class a couple of different ways Meele/Range ect..
Personally i think i will buy this game, its very cheep and looks quite fun to play.