These are projects that do unexpected stuff with OSM.
OSM Map on a Play Station Portable (homebrew)
Map This! , an open source PSP homebrew sat nav project, supports downloading OSM tiles to create GPS-compatible maps.
Since Map This! allows one to save their GPS path (as a CSV), it can also be used as a source for track data.
We-Travel, a routing navigator with 2D and 3D views and voice instructions, is reported to work on the PSP with PSPKVM. GpsMid with routing and GPX track logging also works on the Sony PSP with PSPKVM. Only the Sony USB GPS receiver is supported in PSPVM currently, but support for serial (RS-232) receivers (like Holux hardware with special cabling) is planned for the future.