Not a huge fan of $_ here, I like named things. While it's neither difficult nor tricky to remember to use 'local $_ = shift;', it feels like a contrived and hoop-jumpish thing to do to avoid using a variable later. Just call it something. When there are multiple arguments, I like how the multiple shift style scales, easy to change the order, insert, delete and comment:

sub do_stuff {

  my $foo = shift;
  my $bar = shift;

  ...
}
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See What's so bad about &function(...)? for the style discussion about do_stuff(1, 2, 3) vs. &do_stuff(1, 2, 3).

YuckStyle