What is your favorite game you got from a bundle?

Bastion, that game was amazing

Bastion + i got the feel that awesomenauts will be played many hours :D

BIT.TRIP Runner

The ones that got bundled but I got them from somewhere else: Sam & Max Season 3 and Darksiders II.
But the ones I got from a bundle and enjoyed the most... I'd go with VVVVVV and NightSky.

Super Meat Boy, Cave Story+ and Machinarium are all from Humble Bundles, and I fell in love with each one as soon as I started playing them. i'd go as far as to call them my top 3 favorite games ever, and they're definitely the best games I've got from bundles. And know that I think of it, it got me a while to warp up to Psychonauts (from HIB V), but once I did (continued from where I quit last summer after I bought Double Fine Bundle) I enjoyed it more than any game in a long time. And then there's Bastion, of course. I bought it again with BTA price when it was on HIB Weekly because I absolutely adore the soundtrack, and I wanted to support Supergiant Games because their next title Transistor looks just as awesome as Bastion.

Some really great games I've enjoyed a great deal such as VVVVVV, Braid, The Binding of Isaac and Hotline Miami have been included in bundles, but those I've bought directly from developer or Steam so I don't think they count in this thread.

Cave Story+ and BIT.TRIP Runner

VVVVVV! I pretty much played all of the games from the HiB 3 more than any other bundle.

Super Hexagon. So. Damn. GOOD.

Drakensang

Many of my favourite Steam games came from bundles...

Binding of Isaac

Hotline Miami!

little inferno

Walking fucking dead.

Awesomenauts, been playing with it every day since I bought it with a friend.

Hotline Miami, but I missed a lot of them.

Super Hexagon

Saint's Row: The Third

The Walking Dead

Super Meat Boy or Saint's Row the Third. Both were the main reason for getting the bundle they were in.
Honorable mentions go to Cave Story+ and Jamestown