Kevin Rosenberg is putting 100 debian packages up for adoption. That means that, among other packages, these are now without an official debian maintainer:

• cl-asdf
• cl-interpol
• cl-irc
• cl-pdf
• cl-ppcre
• langband
• sbcl

You can get a full list of packages in his weblog entry. If you are a debian maintainer or you plan on becoming one, there’s a lot of (high-quality, and high-profile) stuff available for you to take on.