Sure. Did you search for any?
How many is "some"?
Someone posted very recently even a sketch to multiplex 3 digits, part of a 900 second countdown timer.http://arduino.cc/forum/index.php/topic,65026.15.html
Did you want to control them via shift register to save pins? (1 register per digit)
Did you want to multiplex them? (7 IO pins, plus anode control per digit, perhaps a compination of shift register & anode contriol/digit?)
Scroll down here to LED stuff http://arduino.cc/playground/Main/InterfacingWithHardware#Output
, see if anything suit your fancy.