Are there others? Yes, there are. Not many, but they exist. Myself, I’m not a member of the LP, and my support for policies such as government sponsored education, public roads, roads, parks etc. (and –critically–progressive taxation to finance same) would probably get me kicked out of any truly Libertarian political group.
Regarding your second question, in my opinion the LP is not as pimp as it seems, both because (a) genuine libertarians hold a number of (to me) fundamentally misguided notions, and (b) there just is not much support for the idea – at least for now. Many people hold what would appear to be some libertarian views on some issues, but on closer inspection these views are generally limited to cases in which the libertarian view just happens to coincide with their own. A person who opposes the minimum wage as an over-extension of government power, but supports marajuana prohibition, would be one example. A person who opposes a flag-burning amendment as an over-extension of government power, but supports “hate speech” laws would be another. In each case the person supports the idea that nobody should use violence against another except in self defense “unless I really disagree with the other person and feel like I should be able to use violence against them.”
In terms of a philosophy to take something beneficial from, yes – I find it to be very pimp. The notion that the core of good politics can be boiled down to [color=black]“No person can use violence against any other person except in self defense”[/color] is, in my view, a view well worth considering, and incorporating into one’s political outlook to one extent or another.
As I mentioned above, I, personally, do not accept this view in its pure form (else I could not be in favor of, say, publicly financed parks or schools), but that doesn’t mean that it cannot form a decent starting point from which any deviation should have the burden of justifying itself as a wise and beneficial exception.