Discover Bank has some high CD rates on their long term CDs, with a 4.57% APY 4 year CD and a 4.81% 5 year CD. Minimum balance on CDs is $2,500. Short term CDs have lower yields.

Discover Bank also has a money market account with a fairly competitive yield, at 3.04% APY.  Deposits over $50,000 yield 3.14%.

Banking with discover could be useful if you already have other accounts with them.