Aeroplan is offering 5000 bonus miles for converting hotel points into 20,000 miles or more. Registration is required, and the bonus can be earned once per hotel partner.
With this promo, 20,000 Starwood points become 30,000 Aeroplan miles.
The offer also allows 1000 bonus Aeroplan miles for converting hotel points to 5000 Aeroplan miles.
This is valid for transfers through August 31.
Aeroplan really is one of my favorite programs. They have a favorable award chart for most destinations, no blocking of partner award inventory, and favorable routing rules as well.
It takes 120,000 Aeroplan miles to book a roundtrip in first class from North America to Asia. You can make two enroute stopovers (or one stopover and an open jaw) and you go either via the Atlantic or the Pacific or cross one ocean in each direction. This may be the best award out there at the moment.