Yeah ones that fix bugs or improve graphics a bit would be good. Not worried about the perks and items as such.
http://newvegas.nexusmods.com/mods/36901 - Fallout Mod Manager, a requirement for some good mods, strongly recommended for organising mods in general
http://newvegas.nexusmods.com/mods/43135 - NMC texture pack, does what it says on the tin
http://newvegas.nexusmods.com/mods/45104 - Mission Mojave, a general bug-fix compilation, needs the 4 main content DLCs and Gun Runners Arsenal since it modifies those files
I'd also recommend Darnified UI, improves the interface significantly. The author seems to be updating it as he's taken it off the Nexus right now, there may be older versions hosted elsewhere.