"We started off as the young guns of comedy and now we're the old men," says Jackson.
But they're not too old to celebrate.
This weekend, the Improv Bandits mark their 19th birthday with two shows at The Auckland Performing Arts Centre (TAPAC). There's a one-off show on Saturday which sees long-time Bandits returning from overseas to perform the fast, furious and funny routines which they're renowned for.
Before that, on Friday night, veteran comedians and newcomers, who've been training through Covert Theatre, appear in Coconut Mojitos. The audience sets the theme for the night and then it's non-stop characters, scenes and sagas based around that theme.
Jackson hopes it'll go some way to helping the Bandits with their next mission: find their own premises once more so they can continue training the next generation of improv comedians.
He says the best birthday present would be to find a big warehouse, with a high stud, which isn't in the centre of town. It wants to convert it into a training centre with programmes for kids and the community as well as somewhere they can perform.
What: Coconut Mojitos
Where & when: TAPAC, Friday at 8pm
What: Improv Bandits
Where & when: TAPAC, Saturday at 8pm