Hello my name is Marcus i live in Sweden :) The Half Life 2 Mods i like is Source Forts,Fist Full of Frags,Pirates Vikings and Knights,Dystopia,Smod CSS SCI FI,Half-Life 2 Smod,FBI MOD,SMOD TACTICAL,Zombie Master,Age of Chivalry,Insurgency Modern Combat,D.I.P.R.I.P (Die in Pain Rest in Peace),Zombie Panic Source,Empires HELL YEAH its alot of mods and that was only mods for HL2 LOL.
I dont like HL1 MODS so much if you dont count with Cs,Cz.
But this is the mods i like most Sven Co-Op,Natural Selection and Counter-Life.
Command and Conquer 3:Tiberium Wars fave MOD is Tiberium Wars Advanced.
Diablo 2 favorite MODS:Back to Hellfire and Median XL (dont know if i spelled right but you might understand)
Counter Strike Source and Counter Strike 1.6 fave mods:Zombie Mod,GunGame,Deathmatch,WCS ( WarCraft Source ) and RPG MOD (Role Playing Mod)
Good Bye and HAVE FUN! :D