I really don't like Delilah. The Biblical association is grim; the Tom Jones song is grim; and the Hey There Delilah song was overplayed to the point that it made me want to go Van Gogh and cut my ears off.
I feel the same way as superbeagle about that dreadful. big white tees song. Shudder.
I do, however, love the name Delilah and Lilah as a shortening. Very sweet (so long as you don't think about the biblical connection, but is that what most people think about these days when they hear a biblical name)?
On a similar vein, how about Dilara? I know one who is awesome.