The 5% APY is not the best for 5-year CDs, but if you're looking for a long-term CD at a strong bank, this may be a good option. For more details on these online CDs and my experience opening one, please refer to this post.
A reader has commented that he saw 5% APY CD for 60-120 month terms being advertised in a WaMu branch in Boca Raton, Florida. This does not show up in WaMu's traditional CD page, so this might depend on your local branch. If you find that your local WaMu branch is offering these 5% CDs, please leave a comment.
Thanks to the reader Shrazzy who mentioned these latest rates in the Finding the Best Deals post.
Update: Chase Bank is also listing a 5.00% APY 60-month CD at its website. It's one of their special CDs with a minimum deposit of $10,000, and it's available online or at a branch.