Have you ever had to use bit shifting in real projects?

Question

Have you ever had to use bit shifting in real programming projects? Most (if not all) high level languages have shift operators in them, but when would you actually need to

Answer 1

One place I use them all the time is when transposing the endian-ness of integers for cross-platform applications. They also sometimes come in handy (along with other bit-manipulation operators) when blitting 2D graphics.