I liked the part where that resistance member guy said “…Gordon!”
its to hard to chose so i have to say from when you pass Barney in hl1 to when Eli gets beaten in episode 2.(or actually that part sucks 
make it until right before that)
On a Rail.
Definitely.
Every tedious driving part.
The free stalker-holder-thing ride(s) inside the citadel. It was a great way to build up to the blue gravity gun, and the ending sequence of HL2, and I got to see those big things that you never really get to fight…
I dont really have a favorite part. I’ve played half life since the first day it was released. I just love it all. Gordon is my hero. HALF LIFE FOREVER!
Ride in the Transit System. Hawt.
When Alyx asked DOG if he did the math (when he is suposed to throw the car in Ep.1) and when DOG sj´haked his head, no he did not do the math, you panic but you get in the car anyway. :freeman: