I find that I only use one Shout, really. The Become Ethereal Shout. The offensive shouts take too long to cooldown and the others are just useless imo. If you're an idiot like me and refuse to fast travel, Become Ethereal is very useful. For one, you don't use stamina while ethereal so you can sprint for a good while longer. It's also useful when 'fast travelling' down mountains or running like a scared little girl from a boss you aren't prepared to fight.
So, what do you guys think?
I use that Ethereal Shout in much the same way. It's surprisingly useful when you've got a gaggle of enemies who are way above your capability chasing you and nowhere to run but straight down.
As for other shouts I use?
-Unrelenting Force for knockdown and blasting enemies off cliffs (never fail to make me giggle), and the ever useful stagger of dragons so I can add a few more *****-slaps to them with my dual swords.
-Whirlwind Sprint for exploration of places (you'd be amazed at how many things can be reached with a simple 60ft horizontal leap)
-Dragonrend to bring dragons down to play with the aforementioned *****-slap swords
-Stormcall for those moments when I've discovered that I have a conga line of enemies chasing me and I can't be arsed to deal with them, so I climb on top of a rock and let Thor go all Heavy Metal on them.
Otherwise, I'd rather just smack my problems with my swords.