And now here is your weekend moment of zen . . . actually, a half-hour of zen: Comic innovator Ernie Kovacs' legendarily visual "Eugene" special, made just before his 1962 death. Today, we're used to all kinds of video tricks, but 50 years ago, Ernie was a pioneer, playfully expanding the TV medium with imaginative glee. Take a time trip that continues to delight . . . - DW