I make a very yummy strawberry Tiramisu. It's basically a cross between a Tiramisu and a Trifle. Macerate sliced strawberries in granulated sugar juice and the juice of one orange (remove the zest before juicing and reserve). Make the mascarpone custard as usual. Then strain the strawberries and baste the sponge/lady fingers in the strained juices. Assemble by layering the sponge/lady fingers, mascarpone custard, strawberry slices, then repeat. Whip heavy cream to soft peaks. Add in the orange zest and some powdered sugar. Whip to almost stiff peaks and then smooth the orange-scented whipped cream on top of the top layer of strawberries.
I came up with this version as my DH hates coffee flavored anything, but LOVES strawberries and LOVES the other components of Tiramisu (for a more "grown-up" version, I add a little Grand-Marnier to the strained juices from the strawberries before basting the sponge/lady fingers).
You could do the same thing with mixed berries or even sliced peaches.