The latest Humble Bundle has been out for a few days now, and yesterday they added the bonus games. Altogether you get:

Little Inferno
Thomas Was Alone
Dear Esther

Pay above the average and you get:

Hotline Miami
Tiny and Big in Grandpa's Leftovers
Intrusion 2
English Country Tune
Oil Rush

I have little to no experience with most of these, but I can say that Hotline Miami and English Country Tune are both excellent, and well worth paying above the average for IMO. I purchased it day one mostly for Proteus, which is a beautiful audio/visual exploration that reminds me of the outdoor areas in Daggerfall.