His second against Spartak Moscow took his tally in the competition to 56, moving him joint second in the all-time scoring charts alongside Ruud van Nistelrooy, but still behind Real Madrid legend Raul.Mexes
Messi's brace also meant he became the first man to score more than one goal in 15 Champions League matches, while he also equalled Raul's record of finding the target in 19 different cities in Europe's premier club competition.
Magnificent indeed, and the mercurial forward deservedly leads the line in our team this week, as selected by expert and user ratings on Eurosport-Yahoo!'s matchcasts.
GK: Gianluigi Buffon (Juventus) - Expert 6, Users 7.2
The Italian was not overly tested against Chelsea, but when he was alert, particularly when repelling a Juan Mata effort, in the Old Lady's 3-0 win in Turin.
RB: Bacary Sagna (Arsenal) - Expert 7, Users 7.4
A solid performance from the French right-back as he helped the Gunners preserve a clean sheet in a 2-0 win over Montpellier that saw them qualify for the knockout phase.
CB: Philippe Mexes (AC Milan) - Expert 9, Users 7.1
The French defender scored a truly brilliant overhead kick, showing unbelievable technique to perfectly control the ball before sending it into the top corner from outside the box.
CB: Ezequiel Garay (Benfica) - Expert 8, Users 7.6
Like Mexes, the central defender also scored with a finish more suited to a prolific striker - a volley to seal victory over Celtic and keep alive the Portuguese side's hopes.
LB: Christian Fuchs (Schalke) - Expert 8, Users 6.8
The 26-year-old left-back scored his first goal in 11 months to fire Schalke into the last 16 with a pin-point strike from distance.
CM: João Moutinho (Porto) - Expert 8, Users 8.3
The Portuguese maestro scored one and created two in another midfield masterclass in Porto's win over Dinamo Zagreb.
CM: Sofiane Feghouli (Valencia) - Expert 8, Users 7.9
Another bright Champions League performance from the young Algerian who capped a lively all-around performance with a deflected solo goal.
AMR: Mario Goetze (Borussia Dortmund) - Expert 8, Users 8.9
Scored a superb solo effort and had a hand in the other three Dortmund goals. Another example of why he is one of the most talked about playmakers in Europe.
ACM: Rui Pedro (CFR Cluj) - Expert 9, Users 8.6
The Portuguese midfielder grabbed a first-half hat-trick and entering the history books as the first man to score a hat-trick for a Romanian side.
AML: Lukas Podoloski (Arsenal) - Expert 8, Users 8.5
The Germany forward was a marauding presence on the left for Arsenal, and scored a magnificent goal.
FW: Lionel Messi (Barcelona) - Expert 9, Users 8.5
With two goals, an assist, the constant danger of even more and a truckload more records shattered, there was never any alternative as to the identity of our player of the week.