May as well post my summaries as to what I think of each movie:
TOD - 10/10 (for me the ultimate Indy adventure. Love it's dark tone and grim atmosphere, Indy IMO is at his best, Mola Ram is the best and scariest villain of the series and the action scenes are some of the most thrilling ever filmed. Never had a problem with Willie or Short Round, either).
ROTLA - 10/10 (not much I can say that hasn't been said already, it's a total classic and deserves all of the praises it gets).
TLC - 8/10 (fun but overrated. Disappointingly deriative of Raiders after how refreshingly different TOD was and I didn't like the heightened comedy, nor the treatment of Sallah and Brody. Still a fun and quality movie though, with Ford and Connery having amazing chemistry and there's still good action bits like the tank scene).
KOTCS - 7/10 (entertaining but held back by too many overly silly moments that get too OTT and detract from the movie).