Tracklist
| The Central Scrutinizer | 3:27 | |
| Joe's Garage | 6:10 | |
| Catholic Girls | 4:26 | |
| Crew Slut | 5:51 | |
| Wet T-Shirt Nite | 5:26 | |
| Toad-O Line | 4:18 | |
| Why Does It Hurt When I Pee? | 2:35 | |
| Lucille Has Messed My Mind Up | 7:17 |
Versions
| Title, Format | Label | Cat# | Country | Year | |
|---|---|---|---|---|---|
| Joe's Garage Act I (LP, Album) | Zappa Records | SRZ-1-1603 | US | 1979 | |
| Joe's Garage Act I (LP) | Zappa Records | SRZ-1-1603 | Canada | 1979 | |
| Joe's Garage Act I (LP, Album) | CBS, CBS | CBS 86101, CB 271 | Netherlands | 1979 | |
| Joe's Garage Act I (LP, Album) | CBS Records Australia | SBP 237366 | Australia | 1979 | |
| Joe's Garage Act I (LP, Album) | CBS Records New Zealand | SBP 237366 | New Zealand | 1979 | |
| Joe's Garage Act I (LP, Album) | CBS | CBS 86101 | UK | 1979 | |
| Joe's Garage Act I (CD, Album, RE, RM) | Videoarts Music | VACK-1343 | Japan | 2008 |