Any round the world ticket can be used for a route like this. Here's a sample route that could be done with the least expensive Star Alliance RTW ticket, beginning and ending in Norway. (RTW tickets are priced differently depending on the country from which travel begins and later ends.) This could include Turkish Airlines to Istanbul and Dubai, Singapore Airlines to Singapore and on to Sydney, Air Canada to Vancouver and Montreal, and Lufthansa to Frankfurt and Oslo.

Here's a Oneworld version, also starting from Oslo, that includes Qatar Airways to Doha and on to Singapore, Qantas to Sydney and on to Vancouver, and British Airways to London and back to Norway.

These are simple samples; you could modify these routes through a wide variety of alternatives or options. Consult the FT Oneworld and Star Alliance boards (under "global airline alliances") for more details.