The old Bigsby trem is one of the most cool additions to a Gibson guitar. I always wanted to try one, but I find them to be quite expensive especially if you want to pair it with the Vibramate plates to avoid drilling holes in your guitar. Other options out there include something similar from Wilkinson that would have you actually dig out a chunk of the top wood in your guitar. Another option is the Stetsbar or the newer Floyd Rose system, but both of those are much more involved than I want.
Enter the Les Trem II, looks cool and functions quite bigsby-like, although it doesn't do deep bends, it does enough for what I want, is much less expensive than the other options and installs super easily.