But Justin Long is no longer a Mac! (
http://www.theinquirer.net/default.aspx?article=35620)
That being said, I think the reason why the commentary has been that a number of the Democrats that were elected were conservatives is because a lot of the Democrats that have been highlighted, Tester in Montana, who is a pro-gun control, anti-gay marraige, is decidedly conservative. In Pennsylvania they ran Casey, a "anti-abortion" democrat. Jim Webb more notably said that it made him sick when he saw Bill Clinton returning a salute from some Marines.
However I certainly wouldn't say that Sens. Conrad Burns (R-MT), Rick Santorum (R-PA) or George Allen (R-VA) were "more liberal" or even "slightly more left-leaning" then their democratic counterparts that are replacing them.
In other cases I wouldn't call Sheldon Whitehouse more conservative then Lincoln Chafee (R-RI) who was largely ousted because of how dismally unpopular George W. Bush is, despite having a very liberal voting record and being notably anti-Bush. Whitehouse didn't run on Chafee being "too liberal" but on stopping George W. Bush.
Other things of note. Four anti-stem-cell research Senators were replaced with four that are for it.
Not to mention that the Democratic leadership in the house under Nancy Pelosi (D-CA) will be at least somewhat Liberal, although probably more reserved that Democrats had been in the past. Gun control and abortion bills are less likely to be addressed and we certainly aren't going to see flag burning or gay marraige amendments coming to a full house or senate vote in 2008.