For the first, Magic Bullet has a Film Looks Effect, that many swear by and use.
For B/W, that Effect is built into PrPro.
For the CC change to yellow/orange, I'd look first to Color Balance, or maybe RGB Hue & Saturation, or both.
Cool, I did not know about that one. Gotta' go see.
Digieffects has been coming out with some sweet, very cheap moduals based on plug-ins they bought from Buena Software and Walker FX.
Camera Mapper is amazing, it makes camera projection a snap (even better than PS's Vanishing point). You could build amazing 3d Matte Paintings and backgrounds with it.
The equally amazing photoreal Falloff Lighting fills a huge gap in AE's light/3d system. Having the option for inverse/square (in plain english: it gives you option to make AE's light actually work like a real light does). A bargain at 50 bucks.
Thank you all very much, that helps a lot. If you have more please give your input.