During his time at SBS, he co-hosted Alchemy which was a late night TV program focused on the electronic music scene.

The new program aired every weeknight from 9 pm for two hours, replacing the single three-hour timeslot that Kingsmill's show had taken.

In 2006, Caroline Tran took the reins of Home and Hosed, and Robbie started a new program Top Shelf Radio, airing in the afternoon drive timeslot from 3 – 5:30 pm.

In 2012 he was replaced by Dominic Knight and moved on to host The Inside Sleeve on Radio National until the end of the 2013 ratings year.

Buck returned to 702 ABC Sydney in 2014 when he replaced Adam Spencer as host of Breakfast 5:30 – 8 am weekdays.