Can you get recommendations without having to log in, too?
Not personalized recommendations, no.
A question for YC-ers: does this sound like a valuable feature? My inclination is to think "no", but I might be wrong...
Use the current session history to do personal recommendations to users that aren't logged in.
As a user browses through the comics he will generally click the things that interest him and a single great on the spot recommendation can be a deal sealer for a new user browsing your site.
Go rate a few of your favorite comics, and then click the "recommendations" tab up top - we've been getting a lot of compliments on this feature.