Well, I'm going to be honest: seeing that I personally hold the belief that Spiritual gifts are available for 21st-century believers (albeit unnecessary for salvation) I would have to say I relate mainly with Pentecostals, for the most part. The church I currently attend is not Pentecostal, but seems to be, rather, a "melting pot" (if that's the right terminology) containing people from various denominational backgrounds (Baptist, Pentecostal, and even Catholic). At this church, the Word of God is preached without compromise, so I am happy about that. Like any other church, it has its problems, but what church here on earth is perfect?
I also feel myself to be fundamentalist. No, not the legalistic, "stereotypical fundie" who relies on a 1,000,000-page book of rigid (and often absurd) rules. Rather, I am open-minded (or at least I try to be), and while I have reasonable standards and my own personal convictions, these are based on my understanding of the Scriptures which I believe are infallible and given by God as a guideline for all Christians. I believe the entire Bible is truth from beginning to end, and this is what brings me to the conclusion that I am fundamentalist, although I don't doubt that there are a number of people here who would vehemently disagree (especially if they are given a chance to read through some of my posts), as I am overall moderate - mostly politically (with conservative leanings when it comes to social issues, but quite liberal on economic issues and matters dealing with health care) - but also possibly on a few theological, Bible-related issues. But this, of course, is a matter of opinion, depending on the issue and how any given individual relates to that opinion.
That being said, I believe that a Christian is a Christian, no matter what the denomination, and this (along with other little issues) is not going to make a bit of difference once we all meet in Heaven - as we will all be too busy worshipping the very King of Kings Himself, in total harmony as the brothers and sisters we are.