Argentina's first half was actually quite good. The offsides were narrow, particular the Martinez one iirc. Another day that counts, they're 2-0 up, and absolutely cruise to a win. Saudi Arabia scored with basically their only 2 attacks and from there defended like absolute demons. Was poor from Argentina in the second half, they seem a bit shell shocked, but I'd be amazed if they don't make it through to the latter stages.
France, England, and Spain looked very competent albeit against incredibly weak looking opposition. Didn't watch enough of Brazil to comment but they'll be in the latter stages too you'd have thought.
My biggest disappointment was Belgium, I know Canada aren't useless plodders but that was a really, really bad performance. There's no way they can play that badly against Spain/Gemany/Japan and get through.