Much as it pains me to support an organization headed up by the likes of Bob Barr and Grover Norquist, I really support what their new PAC is trying to do (as does the ACLU, which counters the libertarian/right heavyweights in Patriots to Restore Checks 'n Balances with a principled lefty presence).
Barr is a hypocrite on abortion and was involved in the impeachment foolishness a few years ago, but he is eloquent and driven when it comes to limiting government secrecy and government intrusiveness; his concerns about the Patriot Act are mine, and their CSPAN news conference the other day was excellent.
There are conservatives worried about the direction of the Republican party--the blogosphere is abuzz since the Schiavo controversy because old-school Buckley/Goldwater conservatives are starting to buck the system a bit; even Brooks and Will have trashed the DeLay crowd this week. It's particularly significant to see guys like Paul Weydrich (Heritage Foundation founder, recipient of lavish support from Scaife, Coors, Mellon, Pew, D. Rockefeller, and primary architect of the "Reagan Revolution") participating in Barr's PAC. Send them money.