Was reading an article in Oracle magazine that talked about some of the upcoming features in 10gR2 and was struck by some of the new stuff that seemed almost behind the times, like Autotrace, which improves explain plan output to include predicate information for each step Oracle takes along the way. We’ve pretty much had that since 7.4 IIRC. 
Feel free to read up on a bunch of other nifty features we don’t have in the link above.