Nor sure why people resist this or are surprised. a PR is an advertisement
But let's face it; as franticFish discovered, there must be a bajillion press releases floating around out there - some probably from before from before rel="nofollow" was even introduced - that are passing page rank.
I don't know how google deals with it? Are they smart enough not to punish someone if the original press release was before the creation of nofollow?
I think what I would do is definitely go and disavow any that have "money" keyword anchor text links, as kellyman mentioned they don't seem to be kosher in google's eyes.