[squirrel]

These are accessible & enjoyable. I am on lecture 12 and learning a lot. Warning: some topics, such as sorting on a machine with unrealistically huge word size, are of only theoretical interest (but it's great theory).

[Evbn]

Which to you recommend as most practical to learn, for folks on short time budget?

[squirrel]

Geometric, lectures 3 and 4; helps (at least for me) to have a picture of the problem as a guide

[smanek]

The ones on memory hierarchy (cache oblivious algos, etc)