Thanks to the extremely basketball-friendly Greek channel of SKAI, basketball fans from all over the world can watch Olympiacos-Maroussi and Panathinaikos-Panellinios games today, online in HD quality.
Olympiacos – Maroussi @ 13:00 CET
Panathinaikos – Panellinios @ 16:00 CET
Both games will be available for viewing here: http://www.skai.gr/player/tvlive/
If you are in the mood for some more (different) basketball you can also watch:
Miami Heats vs Chicago Bulls @ midnight CET (same link)
* Games might not be available for viewing in some regions.