Nice work, Kurufinwe
I only counted 34, so the numbers are probably wrong.
Most of these are guesses:
1. GK: The Beast Within - The Opera
2. MI3 - The song on the ship
9. GK3
11. The Moment of Silence
12. Inidana Jones
21. DOTT
26. Discworld Noir - at the fireplace in some Guild (can' remember which)
30. Syberia - in Valadilène I think
33. GK3 (again?)
34. MI2
Most of them is probably wrong, but I'm pretty sure of GK2, MI3, Discworld and Syberia.