Wake Up Sid to me was a nice wake up call of the kind of great movies being made in India that were more edgy and closer to urban reality, but done in an engaging commercial format without being arthouse.
In the case of Wake Up Sid (WUS), I can safely say that I am not the only one but nearly everyone I know saw the movie much much later after it was released, and all of them had the same reaction. They absolutely loved it - pretty much like everyone & I did. Pity it wasn't a superhit when it was released, as it rightfully should have been.