I think that happened with me for The Walking Dead. I had really no interest in a Telltale game and no memory of wanting it before i bought it. It was on sale and I was hearing hype from here.
I had heard the name Katawa Shoujo but I had never really understood what it was before an article came up talking about it. I'm playing through it and not once have I been bored or disappointed yet.
Recettear: an Item Shops Tale I found through a news post and then again when EC was still on here.
I guess Psychonauts. I've heard people praise the game but it was Yahtzee who first got me a tiny bit curious.
Technically I've splayed depression quest by starting on the first set of options but I haven't sat down for it yet. A thread and an news post told me about it.
Protein Pirates, Gnoming around, Caesar's Day off, Cheese & Punishment, Hamal, Soledad, Dawnseed, The Garbage collector Because Indie Speed Run.
Painkiller Black because Fuck Yeah, Yahtzee!
Peggle Extreme Because Fuck Yeah Yahtzee! I guess.
Just Cause 1 Because of Yahtzee's review of 2. I haven't started 2 yet because I like to play things in order.
Don't Touch My Gems, Talesworth Adventures... Fuck, let's just say everything in Alt Escape.
Bioshock 2 but I think my curiosity got the better of me while this site was trying to tell me to not play it. Oops.
Not Pacman. I don't mean the escapist made me disinterested in Pacman, I mean a game called Not Pacman which isn't Pacman I found through this site. Good thing to because I liked Not Tetris.
Quantum Conundrum because this site actually told me what this game was like.
Also, there is a user called Sweetshark I think, who in a thread or two talked about a text role playing game where you could do some weird shit in it called Corruption of Champions. That night I found out what that game really was. I woke up the next day in some piss alley two towns over with one new scar and one less kidney.