Former basketball star Larry Bird, comedy actress Sarah Silverman and Star Trek's George Takei have contributed voice-overs to the latter half of the series.
The joke is told tenderly by Paul Reiser, urbanely by Martin Mull, seductively by the sublime Sarah Silverman, gravely and with much loving, superfluous detail by George Carlin, and shrilly, with an emotion bordering on hysteria, by the inspired pixie Gilbert Gottfried.