I am currently dl it from BT. It is the classic b/w season with Diana Rigg. Not typically Scifi, but many episodes are close enough, I'd say.
Quality is excelent.
VIDEO: [XVID] 512x384 12bpp 23.976 fps 781.7 kbps (95.4 kbyte/s)
AUDIO: 48000 Hz, 2 ch, 16 bit (0x10), ratio: 16000->192000 (128.0 kbit)