This happened back on June 4 but the Journal Sentinel just got the video now.  Thompson seems to regret a lot of the things he's now criticized for by people on the right; Smart Growth, ethanol support. And his answer on Smart Growth is interesting:

Thompson sounded regretful about signing, in 1999, "smart growth" legislation that works against sprawl and emphasizes conservation, land-use planning and environmental protection. He said he was against it but told business, municipal and environmental leaders that if they could agree on a bill he would sign it.

"I wish they all wouldn't have signed it," he said. "But I gave my word because I never thought they would come together."

If it was something he didn't believe in, why did he give his word? He was banking they wouldn't come together? This is supposed to instill confidence in conservatives?