Brachos and Shatnez

Question

Now for a couple more shailos: 1. What's the proper bracha/brocho for peanut butter by itself? 2. As far as what types of garments MUST be checked for shatnez, would your father be in agreement with what the people at the following website say must be checked for shatnez, or are there items on that list that they say should be checked for shatnez but your father would say "it's a chumra" and doesn't need checking? http://mywebpages.comcast.net/shatnez