Since the new changes on Facebook I am suddenly able to see comments and Likes of people I have either blocked or have blocked me. Their name shows as black and not clickable, but the comments are there instead of hidden like before. It seems ot be wishy washy though, sometimes it seems that they may hide again. I saw one comment from a blocked person, and then when I clicked the "View all X comments" link, the persons comment was hidden again. Other time clicking the View all link still shows their comments. And sometimes the Likes will still hide them, sometimes not.
So if you want to do some snooping on someone who may have blocked you now is the time!
(Moderators please move this post to the private area if I put this in the wrong place, I was not sure)