In case you want the 411, basically Matt Damon has a habit of just randomly appearing in movies for no reason other than for funsies?
So, here are all of the films and shows where Matt Damon has made a surprise appearance:
1. In 2000, Matt made a surprise appearance as Steven Sanderson in Finding Forrester:

2. In 2001, Matt — and Good Will Hunting co-star Ben Affleck — made a surprise appearance as himself in Jay and Silent Bob Strike Back:

3. In 2002, Matt made a surprise appearance as Kevin in The Third Wheel:

4. Later that year, Matt made a surprise appearance as Bachelor Matt in Confessions of a Dangerous Mind:

5. In 2004, Matt made a surprise appearance as Donny in EuroTrip:

6. Later that year, Matt made a surprise appearance as PR Exec #2 in Jersey Girl:

7. In 2007, Matt made a surprise appearance as Ted Jones in Youth Without Youth:

8. Later that year, Matt made a surprise appearance as himself in Arthur:

9. In 2009, Matt made a surprise appearance as himself in Entourage:

10. In 2013, Matt made a surprise appearance as himself in House of Lies:

11. In 2017, Matt made a surprise appearance as fake Loki in Thor: Ragnarok:

12. In 2018, Matt made a surprise appearance as Detective Ferguson in Unsane:

13. Later that year, Matt made a surprise appearance as Redneck 1 in Deadpool 2:

14. Last, but not least, later the same year, Matt made a surprise appearance as Brett Kavanaugh in Saturday Night Live:
