Text Snippets is from TextDrive hosting. What, no search?!
My fave.

O’Reilly Code Search is an O’Reilly Labs project that searched O’Reilly books for copiable code.
It has nice advanced operator examples under the search box (eg: cat:perl shift : Searches in the perl category for “shift”)
Presumably may have some tie in with Safari Bookshelf.

Krugle and Koders seem to return too many results in general, a lot from sourceforge. Maybe for a more advanced coder that’s right on, but it not a script kiddy like me.