Anyone who is as ancient as me will remember when "dialing" a phone meant putting your finger into a little circular hole in a rotary dial, dragging it to a small metal stop, then pulling your finger out of the hole to dial that number. Rotary dial phones disappeared in the 1970s, but now MildMannered Industries is bringing back the fun with Bakelite 1.0 for iPhone.
As the screenshot indicates, Bakelite provides a rotary dial interface for dialing phone numbers. It even has a feature those old dial phones didn't have -- the ability to delete the last number if you mis-dialed it.
Bakelite isn't very practical, but it's fun! The price is right, too. Bakelite is available from the App Store (click opens iTunes) for free.