How many games can possibly go wrong?

The majority, it seems.

Chelsea v Valencia 1 to score over 1,5 goals

Racing Genk v Bayer Leverkusen X either at halftime or fulltime

Borussia Dortmund v Marseille 1

Olympiakos Piraeus v Arsenal 1

A.P.O.E.L Nicosia v Shakhtar Donetsk X/1

FC Porto v Zenit St. Petersburg Hulk to score at anytime

Barcelona v BATE Borisov 1 and over 2,5 combined goals scored

Viktoria Plzen v AC Milan under 2,5 goals

Manchester City v Bayern Munchen 1

Villareal v Napoli 2 to score over 1,5

Inter Milan v CSKA Moscow 1 either at haltime or fulltime

Lille v Trabzonspor 1

Basel v Manchester United under 2,5 goals

Benfica Lisbon v Otelul Galati 1 to score in both halves

Ajax Amsterdam v Real Madrid both teams to score

Dinamo Zagreb v Lyon 1:2

6/16; group D and F results (especially with the goals being scored at exactly the 'right' times) + just plain old bad luck mean this terrible result. Oh well, onto the weekend I suppose.