Every now and then Chase Bank will list a $125 bonus online for opening a checking account. This promotion page provides a unique code that must be used if you apply at a branch or online. The bonus typically requires direct deposit. The last online $125 promotion ended in September. I have more info in my $125 Chase bonus review
As readers have mentioned, Chase often has $125 bonus coupons at the post office in the change-of-address packet. The Hustler Money blog post
has some other ways you can get these $125 bonus coupons such as using eBay or using an ATM at a Chase branch with an ATM card from another bank (preferably from a bank that will reimburse you for fees charged by other banks).