TBB is a little underwhelming in my opinion. Stuff like mutexes, condition variables and even atomics is pretty much standard nowadays (even if you need portability, you can usually rely on stuff like glib or Qt or boost); thread-safe collections are rarely the right solution, because too many fine-grained locks incur excessive overhead. The work-stealing queue is nice, but if you really want things to scale you need stuff like highly-parallel fast paths, with message passing on the slow paths. And this is where TBB falls a bit short of the expectations.
edit: formatting