Most disappointing "Blockbuster" ever?
For me it was..Yes, Phantom Menace was horrible but at least I simply hated it so bad I walked out at the 30 minute part and never finished it. A.I. certainly was god awful but the disappointment doesn't reach this Indy Jones 4 level.
In short, it seemed impossible to make an almost unwatchable Indy movie, but they somehow did just that.