I don't expect much excitement in the House races, the number of competitive seats is at an all time low, mostly as a result of a redistricting cycle that focused on incumbent protection, (only one competitive seat in CA!). Incumbents typically win reelection at >98% (in 2002 only 4 incumbents lost to a challengers, though due to redistricting, 4 others lost in districts in which 2 incumbents faced each other). The real action is usually in open seats, in 2002 6/31 open seats switched party. So far 2004 has a low number of open seats (this site tracks open seats:
http://www.dcpoliticalreport.com/OpenSeat.htmOnly 6 Democrats and 10 Republicans are retiring or running for another office.
Although there is likely to be only about 2 dozen competitive races, here is Roll Call's top 10 endangered incumbents:
Rodney Alexander, Democrat (LA-5)
Max Burns, Republican (GA-12)
John Hostettler, Republican (IN-8)
Bill Janklow, Republican (SD-AL)
Ken Lucas, Democrat (KY-4)
Jim Marshall, Democrat (GA-3)
Jim Matheson, Democrat (UT-2)
Dennis Moore, Democrat (KS-3)
Rick Renzi, Republican (AZ-1)
Mike Rogers, Republican (AL-3)