...And I always use "$i <= @array" instead of "$i < $#array"...

I hope not since they don't mean the same thing unless $[ = 2. However, please realize that $#array is actually:

$#array = $[ - 1 + @array;
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In other words, if anyone ever sets $[ to anything other than the default 0, not only do they then deserve to be beaten with a rubber mallet but they also break your code. Of course, I'm one of those weirdos who does stuff like:

my @acceptable = grep { check $array[$_] } ($[..$#array);
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Although I use "$array[$#array]" in ...

Have you anything against $array[-1] ??

Update: Juerd already said it. Must be time to go home...