From the "The Hunting Party" episode (01/18/2006) of the TV series Lost. There's a glimpse of their album Magna Carta, looking super hippy-dippy trippy and oh-so-late 1960s, or early 1970s. Charlie (Dominic Monaghan) mentions that he's never heard of them, musical expert that he is.
They have the song "Dharma Lady."
One of the other albums seen is The Pousette-Dart Band, which is real.
Another band glimpsed when Hurley (Jorge Garcia) is flipping through records is "Ooklah the Moc" which is a reference to the 1980-1982 cartoon Thundarr the Barbarian, which had a character called "Ookla the Mok." Ookla was apparently named after UCLA. There's a Hawaian reggae band called Ooklah the Moc, but they've only been around since 1997, and the cache of vinyl albums Charlie and Hurley find supposedly hasn't been touched since the early 80s. Lost films in Hawaii, so maybe somebody on the show is giving a tiny shout out to this local band by slipping them in the record pile.