That site has a thorough listing. He seems to have been very odd for a long time, not believing in fossils and things like that.
Quotes the highlights from his recent blogs.
This is one of the better non-blog sources I found, google will find you plenty more:
http://www.macleans.ca/culture/movies/whats-with-dilberts-cr...
He also mansplains harassment: http://freethoughtblogs.com/indelible/2014/11/10/scott-adams...
You can also search for the fun stuff he said about rape and salary inequality.
Here's one of the rape ones: http://jezebel.com/5813290/dilbert-creator-scott-adams-weigh...
He's since deleted the original post.
Please don't use sexist language on HN.
And of course the sock puppets: http://www.salon.com/2011/04/19/scott_adams_sock_puppetry_sc... http://www.wehuntedthemammoth.com/2011/04/16/scott-adams-ima...