My very first program ever was on a PET computer and was written in basic. Here it is in ruby. What was yours?

gistfile1.rb

while(1)
  puts "      /\\"
  puts "     /  \\"
  5.times do
    puts "     |  |"
  end
  puts "      __"
  puts "     /  \\ " 
  puts "      **"
  puts "      **"
  20.times do
    puts ""
    sleep 0.5
  end
end