RE: Clinton popular vote.
Obama is likely to surpass Clinton's popular vote margin (96') at 8.2 million.
Obama is now leading McCain by over 8.2 million votes (this is without Cali 2+ million votes outstanding)
Using absolute numbers is just stupid. That biases in favour of later-day candidacies.
Also, the comparison is not to "even larger landslides" it's to recent elections, of which many were landslides. Which seems to be exactly Carl's point.
The counter-argument I would offer is rather that the landslides of the past occurred largely in a different political climate of Southern dealignment when such occurences happened more easily. Even then though this isn't really historical. It's an impressive win but it's not mind-blowing if you just look at the numbers. And if we are to take the specifics of the situation into the equation it tends to cut both ways (racial issues, economy, etc).