I'm a sucker for detective games.
I have played it on friend's consoles enough to convince me to buy it on the PC when it comes out this fall. Supposedly.
Personally, I enjoy the interrogation stages the most. Mainly because of the way you need to remember clue and think logically.
Shooting stages are ok, but could be made a bigger challenge by making it realistic. As in 1-2 hit means death. Or no regeneration during battle. Full health is restored after you finish the shooting stage.
The driving stages could be harder, like not magically repairing the cars during a cutscene. At the end of the case, sure, whatever, but not mid-case.
Other than that, Rockstar's physiscs engine is pretty good and the graphics are well polished.
I cant wait for the PC port.