For many years, I've used Latex to create my presentations, because I need to include mathematical formulae and symbols. However, it's sometimes quite cumbersome to use, and it's much harder to do "visual" effects (I'm not talking about animations, but for instance about arrows emphasizing a particular word, or connecting two words together, etc) compared to, say powerpoint.
I'm now trying to keep the maths to a minimum in my presentation (that was actually a really good advice given by a good speaker I talked to), but I still need them a bit, so my question is: what good (combined?) solution exist to create nice presentation that involve mathematical symbols?