To OpenID or not to OpenID? Is it worth it?

Question

Does OpenID improve the user experience?

Edit

Not to detract from the other comments, but I got one really good reply below that outlined 3

Answer 1

It's great not having to make too many user accounts all around. All those passwords.... then again, I far prefer a solution like 1Password for the Mac. OpenID is better for sites I'll return to than a separate username, though