inclementimmigrantIndiana Jones and the Great Circle is "by far" the "biggest and longest game that MachineGames have ever done" with nearly 4 hours of cutscenes
Tons of them. IIRC, the ending sequence of MGS4 is about 70 minutes in total.
Appears to be about 9 hours of total cutscene time in Metal Gear Solid 4. The 70 minute cutscene is the longest on video game history.