I tend to feel that ToD is - for some reason - more a collection of set pieces that don't really have a very strong story holding them together. I like the set pieces (the Shanghai opening, the plane escape, the mine car etc) but overall the film just lacks focus.
Crystal Skull is a little similar, whereas Ark and Crusade seem to have a clearer story - find the Ark, find the Holy Grail - and work better as films.
I still prefer Skull to Doom however for some reason. Maybe it's because I like the 1950s 'B' movie nods it's filled with a little better.
'If the Apocalypse starts, beep me!' - Buffy Summers
'The sky's the limit.....' Jean-Luc Picard, 'All Good Things'
courtesy of Saquist