I like his amiable chatty nature as he points out some of the flaws in the script, continuity or plot that bug us too. Although most videos are narrated by just one person, some have more than one and this can be quite amusing.
Some things are never tolerated, DC for instance, and characters who know too much ("NERRRRRRRRRD!") and rightly so. Start like I did with films you like/know and move on. You'll get into them, and then want to add "sins" to the account.
Don't think they hate these films, they don't, but Hollywood (largely the films are those) needs to stay honest. And, yes, the videos (between five and twenty minutes long) do contain spoilers! Enjoy.