Most CD-i games have, in one way or another, integrated Full Motion Video in their content. That's because this new thing, Full Motion Video, was one of the key feautures of the CD-i platform. Before that, on older types of consoles, it was never possible: Animation that took up the whole screen. Of course, when the Digital Video Cartridge was released in 1993, FMV was more easy thanks to the MPEG standard, but even on base-case CD-i titles Philips and other CD-i developers managed to get Full Motion Video on CD-i. Excellent examples we see in Kether (Infogrames) and Burn:Cycle (TripMedia). I'm still amazed how they did that on the low-powered CD-i hardware. Even on other titles like Hotel Mario and Link: Faces of Evil, full motion video cutscenes were used to tell the story and according to the developers we've seen, this was one of the features that Philips wanted to be included so that the CD-i version could differentiate from competition.
Later, FMV was used in cutscenes of Lititl Divil, Mutant Rampage and many others. It was even present in small FMV scenes (CD-i exclusives) in games like Micro Machines and Flashback. We have clues this was also for the same reason, but less strict when the focus was more on gaming.
Of course, FMV was also home to the core mechanics of various CD-i games. Including shooters (Chaos Control, Solar Crusade) and 'interactive television' like in Mad Dog McCree and Thunder in Paradise. We had interactive cartoons like Escape from Cyber City, Dragon's Lair and Space Ace and it was home to action adventures like Lost Eden and Creature Shock.
There are actually very few CD-i games that do not have any kind of FMV in it!