If you liked the previous episode of Penny Arcade: On The Rain-Slick Precipice of Darkness then you will like this one, which means if you like funny games set in a steampunk-like 19th century fighting giant robots with fists, guns and hoes and has no replay value, then---yeah.
Compared to the previous incarnation of this game, this game has a lot more swearing. A lot of utterances of the word fuck. It also has slightly trickier puzzles, with one section involving the twisting of hexagonal pieces to make pathways through the brain to prevent insanity.
Like the previous incarnation of the game, it has your hapless custom character in search of a home, accompanying Gabe and Tycho in a fight against such foes as obnoxious lovers, rich people and fruit fucking robots.
It's certainly funny, with quests to obtain a million dollars so you can buy a bracelet and fights where your enemies hit you with such attacks like throwing a box of chocolates at you. I guess the only down part about it that it has the pitfall of any adventure-based game with humor attached to it in that it doesn't have much replay value at all. Sure, there's an option to play the game in "insane mode" for secret items and such, but really, when you go through it once and have heard all the jokes, there isn't much incentive to go through it again. Also, the quest should take you about ten hours to complete, so the game isn't very long to begin with.
It's available for PC, Mac, Linux and XBOX Live for $15. Pick it up if you want to be entertained for a short while.