I've been enjoying Monsters at Work. It's a good show to just pick up and watch if you've watched the previous movie(s). While this isn't perfect (obviously), I think the immense chaos that happens in each episode makes me stick around to see how it resolves. I've seen some call it an office rip off and I can kind of see their point but considering I love the office, I don't really mind. As with most Disney films, this is aimed more at children than older audiences so there's going to be more child oriented jokes but there were still time I audibly laughed. I don't think you can really make an adequate sequel to Monster's Inc. when the ending was already cut and dry. I honestly don't think that Boo coming back into the series would make any sense and I think the reason fans want that is for nostalgia reasons, but I won't be surprised if it never happens. If you really want to see more Monster's Inc. content, I'd give this a go.