The following logos use either very bold and simple imagery or very bold and simple fonts. This would help the logo to stand out at a further distance as they will be displayed on screen. Some of the logos move and this makes them eye catching and innoavtive.
Here are some logos downloaded from Dribble. The ones I noticed that are the most eye catching a memorable are first of all the animated logos. Then it would be the ones with well put together colours. Current design trends include black and white logos but im not sure I would want mine to be still and black and white.. maybe one or the other.