Besides the podcasts on iTunes, the Videos on SCIVEE, and the “learning from famous presenters” series, this blog contains general tips quite useful for scientific presentations. They are listed here in point form.
On the role and merit of a subtitle in a presentation
On the best book to buy to learn about scientific presentations 
On addressing you when your name is difficult to pronounce
On pre-empting difficult questions prior to the Q&A
On selecting the best candidate to take questions from during the Q&A
On checking that each slide ties in with the title of your presentation
On managing time by creating invisible time-saving shortcuts (hyperlinks)
On the good use of animations in a presentation
On the need to be in good terms with your audience
On the need for nitpickers to debug our slides
On avoiding discontinuities in your presentation
On presentation traps ; hazardous comparisons
On presentation traps: forced audience interaction
On presentation traps: the joke is on you
on presentation traps: the mouth trap
On presentation traps: the title trap
On presentation traps: the conclusion traps
On presentation traps: the cultural trap
On presentation traps: the knowledge trap
On presentation traps: the rehearsal traps
On presentation traps: the room trap
On presentation traps: the Q&A trap
On presentation traps: the body trap
On the design of any main story slide
On the validity of so-called “rules of thumb”
On how to demonstrate scientific expertise
On the placement and function of acknowledgments in a presentation
On how to keep what you say and what they see in total sync
On being noticed by the audience and keeping the computer in the background
On the incredible value of the smile
On the legal issues of using in your slides images that belong to others
On a probing technique that shows the audience is responsive
On fool proofing your presentation against all odds