A lot of those games are really pushing the definition of "rules-lite." C&C, Exalted (
)... Is the sole criteria "lighter than the current edition of D&D?" Heck, I'm not even sure Exalted
is lighter than D&D 3.5 and definitely don't see it as lighter than d20 Modern.
At the threshold of "rules-lite" used here, I'd suggest Mutants & Masterminds, which I've personally found easier and more intuitive than True20. It has supers trappings, although (like HERO) it works as a toolkit. Like HERO only much easier to work with.
Silhouette Core is my personal favorite system. Probably about as crunchy as BRP (Call of Cthulhu/Runequest) but with a clever dice pool system instead of a d% system. It may be hard to find, though.
True20 is almost as good as Mutants & Masterminds.
Feng Shui isn't really rules-lite, per say, but it's as light as some of the stuff on this thread and also a fun introductory game.
FUDGE is about as light as new players could possibly begin to handle; don't know FATE.
With all that said...
Are you SURE you want a rules-lite system with which to introduce new players? If you're not familiar with the system, you probably won't GM it terribly well. What's more, some new players are as intimidated (or confused) by the lack of rules as others are by 100+ pages of rules.
A lot of it depends on the players' backgrounds. What do they presently do for fun?