Hogs on Ice, on Sandy in Socks
For the best photoshop and funniest commentary on the Sandy Berger, you must read up Steve Graham's comments in his blog, Hog On Ice, the guy that first came up with the "Waterpants" word.
Meanwhile, Roger's noticing that Clinton's not doing Kerry any favors.
As a commenter in the Daily Kos put it,

If this whole thing is news to Kerry, that Berger has been under investigation for mishandling classified information since January -- and that Berger actually DID mishandle, if innocently -- he absolutely owed Kerry an honest admission of that.
If he did not tell Kerry, he put Kerry in a very difficult and embarrasing position, and whatever the GOP sleaze machine has to do with timing, it's Berger's fault for doing that to Kerry.
If Kerry knew and still trotted out Berger so publically -- Kerry has quite actively identified Berger as an advisor -- then that's a poor decision on Kerry's part

Berger has resigned abruptly Tuesday as a senior adviser to John Kerry's presidential campaign.
Byron York explains

The documents Berger took — each copy of the millennium report is said to be in the range of 15 to 30 pages — were highly secret. They were classified at what is known as the "code word" level, which is the government's highest tier of secrecy. Any person who is authorized to remove such documents from a special secure room is required to do so in a locked case that is handcuffed to his or her wrist.
It is not clear why Berger would focus solely on the millennium-plot report. But it is clear that the report has been the object of intense discussions during the September 11 investigation.
. . . In May, a government official told National Review Online that the report contains a "scathing indictment of the last administration's actions." The source said the report portrayed the Clinton administration's actions as "exactly how things shouldn't be run."

The York article closes by saying, "the report was ultimately given to the September 11 Commission".