i have seen two really good combinations of wood and metal on designboom recently. the first is the 'naked chair' by the studio of outofstock design. the chair is made of beech and folded steel, which comes flat packed.
the second set of examples comes from american designers vincent and paul georgeson, for misewell furniture (below). the collection includes a few tables and chairs, as well as lamps and coat hooks, all using a really nice combination of wood and metal, which all have a cool industrial look. this retro industrial look follows through on their website, which is also worth a look!
link to designboom article for naked chair
link to outofstock
link to designboom article for misewell furniture
link to misewell