Supernova (2005)

S7E6 Three Men, a Woman and a Baby

Del is on the verge of fatherhood, but Rodney remains in a gloomy mood. He frets over the melting Polar Ice, dying rainforests, and polluted oceans, and to top it off, he's been out of luck in the romance department for ages. In a bid to impress Cassandra, he wonders if one of Del's trendy ponytail wigs might help spruce up his appearance...