Well, they were back in 1988 for the Bicentennial Airshow! Here's some photos I took of some Russkie gear on show here in Australia over the years. I missed seeing the mighty Su-27 back in 1995 at Avalon - was on a job in China at the time
Think this MiG-15UTI is a Polish built machine.
Nick Costan's Su-29 at PCK - aerobatics comp years ago.
Jurgis Kairis in front of his Su-26M
Hans Litjen's Yak-50 (since sold to USA) fitted with 400HP M-14 engine - one of the most sensational aerobatic aeroplanes to watch, as it's quite big and has a amazing presence and sound. This was possibly the last Yak-50 competing in Advanced aerobatics in the world (according to Mark Jefferies in the UK).