| Episode credited cast: |
 | Mark Sceurman | - | Himself - Host |
| Mark Moran | - | Himself - Host |
| Sandra Mansi | - | Herself |
| Joe Citro | - | Himself |
| Mike Shea | - | Himself - Spirit of Ethan Allen |
| Paul Marshall | - | Himself - Spirit of Ethan Allen |
| Dick Furbush | - | Himself |
| Rob Bender | - | Himself - Concrete Boat Historian |
| Joe Martin | - | Himself - Concrete Canoe Advisor |
| Andrew Hochheimer | - | Himself |
 | Coolio | - | Himself |
| John Rennie | - | Himself - Scientific American |
| Rest of cast listed alphabetically: |
| Jennifer Conway | - | Reenactment |
| Rakhee Jethwa | - | Reenactment |
| Scott Miller | - | Reenactment |
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