There are many other metrically tricky words, one of which is 'child', which I've seen here as requiring to be read with both one and two syllables, though I prefer it as one.
In a poetry workshop I once asked the participants how many syllables there are in 'Romeo and Juliet', and I got the answers 'Five' and 'Seven'!! It all depends whether you elide some of the syllables. Another favourite is ''Strawberries and cream' which, in the UK, is usually pronounced with four syllables not five, as in 'straw-breeze and cream'.
I agree with Julie that 'here' and 'tear' are monosyllabic, more often than not.
And what about February? Three or four? Phonetically, a lot of us would say 'Feb-you-ree' rather than 'Feb-you-a-ree'.
But when any of these words appear in a poem it's usually pretty clear from the meter how the word in question needs to be read... (notice that I said
usually 
)
Jayne