Sam and Max: Beyond Time and Space - or Season Two, as it was once known - will be available on the PSN Store tomorrow. (Or today, for those of you who live in the futuristic world of Far East Asia.*) It's available for $19.99, or $29.99 for those of you who wish to get it packed with Sam and Max: The Devil's Playhouse. More here.
Personally, I recommend getting the game - or games, if you own neither. They're funny, well-realized gems, and can be wonderfully brilliant at times. They are perhaps superior to Hit the Road, and they are definitely superior to Sam and Max Save the World (or "Season One" for you purists). You probably don't want to miss out. I'm happy I didn't.
(*Not that you can buy the game, Far East Asians. It's going to be available in North America only. Power to the border-destroying internet, and all that.)
Source: Playstation Blog