in reply to Logical expression style
I use the "operator goes at the end" style, which for some reason just seems more natural to me. (ISTR someone else in the monastery claiming that the trailing operator signals "this isn't done yet"; works for me.) I do this with long expressions in general, not just logical expressions in conditionals:
my $str = &long_function_name_foo() . " some literal string or other " . &long_function_name_bar();
I know a number of people who religiously break up long conditionals or subroutine calls, but are perfectly happy to leave 250-column string concatenations in their code. That blows my mind every time I see it.