We've compiled the 20 most popular technical articles, notes, guides, and columns published by OTN this year here. Note that with rare exceptions, this content is authored by non-Oracle members of the OTN community.
Those of you who did not attend OOW, and/or who did not pick up a copy of the "Greatest Hits 2005" CD (containing all favorite OTN content for this year) can now download an ISO and burn your own copy:
http://download.oracle.com/otn/other/greatest_hits_2005.iso
(OTN membership required -- sheesh, what are you waiting for anyway?)