Olivier Otten
| Stifo@Sandberg masterclass 06/07: Team 7 | — | jun 10 |
| Stifo@Sandberg: Viewmaster | — | dec 07 |
| Stifo@Sandberg Masterclass 03/04: team 6 | — | sep 03 |
| Stifo@Sandberg: De (On)Geloofstest | Ingeborg Jansen | sep 03 |
| Stifo@Sandberg masterclass 06/07: Team 7 | — | jun 10 |
| Stifo@Sandberg: Viewmaster | — | dec 07 |
| Stifo@Sandberg Masterclass 03/04: team 6 | — | sep 03 |
| Stifo@Sandberg: De (On)Geloofstest | Ingeborg Jansen | sep 03 |