Hat-tricks have been scored on debuts, long-range belters have been netted and more. But rarely has a loanee made such an impact as quickly as the Chelsea-owned winger has at Upton Park.
Indeed, during his West Ham debut, Moses was superb against Newcastle United, running the Magpies ragged with his pace and aggression.
The only thing the 24-year-old didn't quite manage against Newcastle was to score a goal - he hit the bar before Dimitri Payet tucked in the rebound for his second.
So what did the Chelsea man do during his second game on loan at West Ham? He got that goal - and against Premier League leaders Manchester City no less.
Needless to say, Chelsea fans were full of praise for 'Agent Moses' on Twitter...
The 24-year-old's celebrations were wild against Manchester City and there were some superb photos of the Hammers star after he netted and the east London side registered a 2-1 win at the Etihad Stadium.
Here's a selection of them...