On Disc 4 of Lucy Season Four is an easter egg under the bonus features section. Go To Lucy on the Radio, scroll all the way to the far right, and see the CBS logo light up on Lucy's microphone. Click it for a pictorial surprise. It's a picture of Lucy staring at co-star (on the radio), Richard Denning. Denning was George Cooper on the show, and Lucille was Liz Cooper, they were two people who lived together and "liked it" as the announcer says before each and every episode's story's plot.
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I Love Lucy Season Four by John Sinnott.