I’ve just finished a short article discussing reflections:
http://www.zspline.net/blog/reflections-in-unreal/
Nothing groundbreaking just kind of summarizing what’s
what.
I’d appreciate if you could give me some feedback on it. 
Excellent stuff Zoltan. I’ve recently been getting into reflection stuff for UDK. So this was a great read 
Also thanks for the UE3 stuff on using the up vector to blend. That also was a good read haha.
Very nice stuff. Some of those tests look similar to some I’ve worked on recently (different engine though).
I love 2D reflections, due to their cheapness, ease of faking things (like anisotropic effects), and lite memory footprint.
Very nice stuff indeed.
Cheers guys.