A more showy version of bwk's random program for 333. Builds up some more suspense at the expense of time / student sanity.

Random

#!/usr/bin/env python2

from random import randint
import sys
from time import sleep
MAX_TIME = 3 + randint(0,3)
SHOWMAN_RUNS = 40
SHOWMAN_SLEEP = .05
f = open(sys.argv[1])
lines = f.readlines()

slp = .0001
lastline = ""
# showmanship loop for some time
for i in range(SHOWMAN_RUNS):
    # get a random line
    line = lines[randint(0,len(lines)-1)]
    # clear the line
    sys.stdout.write('\r' + (' ' * len(lastline)))
    # print the line
    sys.stdout.write('\r' + line.strip('\n'))
    sys.stdout.flush()
    # sleep
    sleep(SHOWMAN_SLEEP)
    lastline = line

while slp < MAX_TIME:
    # get a random line
    line = lines[randint(0,len(lines)-1)]
    # clear the line
    sys.stdout.write('\r' + (' ' * len(lastline)))
    # print the line
    sys.stdout.write('\r' + line.strip('\n'))
    sys.stdout.flush()
    # sleep
    sleep(slp)
    slp = slp * 1.5
    lastline = line

sys.stdout.write('\n')