Chase does this every few weeks whereas they keep coming up with a new Chase Checking Account $100 Bonus link. The latest one is good until February 4, 2011. According to the terms, you must make an initial deposit of $100 and set up direct deposit in order to qualify for the $100 bonus.
Chase Sapphire $100 Bonus
The Chase Sapphire(SM) Card is giving away 10,000 Bonus Points after first purchase. The 10,000 bonus points can be cashed in for a $100 check. There is no annual fee and you get 2X on all airfare booked through Ultimate Rewards. There is no earning caps, point expiration, or blackout dates.