SOF2 had great entertainment value as did Postal 2!
I liked shooting enemies through windows and watching the shards of glass stick in their faces! I know thats probably disturbing actually.
Reasons i don't like mapping with source. one word. Props
How boring is that? In hl1 you have to make everything from scratch. Hl2 gives you the ability to just drop stuff in. Its no different than the spawn menu in Garry's mod. In fact i'd say that Garry's mod is the best thing to do with source! Now that its done, whats left?
BOOOORRRRRING!!!!!111!!