It´s not my cup of tea in RL but the running gag about Shepard´s dance skills became rather annoying. Especially Joker. Yeah thanks for laughing at me, when I offered my meager skills in dancing to cover for you and your brittle leg bones.
I found it nice that Garrus helped you with something where Shep was lacking.
I find the mocking kind of ridiculous since Joker dances exactly the same way. Garrus dances exactly the same way in the DLC. And a lot of the NPCs in general dance exactly the same way. So, why does just Shepard get picked on? Personally, I think about the only people who actually can dance in the entire franchise are Tali, Samara, and the strippers. And, I mean, who cares? Shepard's just having fun, stop giving her/him sh*t for it, maybe? 
I've always found it funny Garrus told my Shepard, "I've actually seen you dance. No comment." Because I pretty much never have her dance throughout the whole franchise because I just don't care about that sort of thing.
So, I'm like, "Really, Vakarian? And what had you been drinking that day?"
I don't need Shepard to be a perfect, untouchable, "bloody icon", but it would be nice if they didn't accuse her of stuff she's never done. Come on, I've had enough of that with Cerberus and stuff. Same with Miranda talking about Shepard killing marine life. I was like, "Wait... Wait, what?" I didn't get the joke for like two playthroughs because I've never bought fish and definitely never had them die. I actually thought she was talking about the Leviathan but... I didn't... kill those... yet. Stop making stuff up! 
I agree, though, it was nice to see Garrus try to help her out with it a bit without all that pointing and laughing for a change.
But that's a big off-topic. However, speaking of dancing... so, hey, what about different races and music and dancing? I don't assume we'd all like the same kind of sounds and moves...? And while we're at it, what about different races and courting (techniques)? How would you woo a krogan? 