But it is definitely widespread. Many of them think you are strange if you never "receive the gift." I guess they forgot about the part where Paul said that different people would have different gifts.
Its interesting you say that, because the flavor of what Paul is saying in 1 Cor 12 about tongues suggests to me that even though some aren't given that particular gift from the get go, we are still to 'desire the greater gifts'. Does this include tongues? I don't really know. In 14:5 he does say "I would like you all to speak in tongues, but I'd rather have you prophesy." So maybe he's referring more to that being the greater gift.
I'd agree with most people here who say that the gift is largely misunderstood. Paul says the purpose of speaking in tongues is mostly to edify the spirit, and it only edifies
the church if it is accompanied by interpretation. Which is what WW and Hef were saying up above (evangelism). I find the whole thing about people feeling unnerved by people speaking in tongues around them so interesting, because Paul clearly addresses that situation in this passage. Those tongue-trigger happy pentecostals must've missed that part
Anyway, in answer to the OP:
Have I done it? Yes, mostly in my own personal prayer.
Do I think its a crock? No, but I think like other aspects of Christian theology people have misunderstood, misused and misinterpreted it.
Do I think its legitimate. Yes, because its backed by scripture.
My thoughts.