One funny is the comments on the Sport Mode:
'Should the RS4 be threatening to lull you into too great a sense of familiarity, there's another button that now begs to be pressed. It's marked "S" for "Sport", but should really have a "B" for "Ballistic".
The first sensation it provokes is a severe clamping of the buttocks, as motors narrow the side of the seat squabs to hold the driver even more firmly in place. If your backside is of Pavarotti proportions, prepare for agony.
Try to maintain concentration; in the likes of a BMW M3, such a switch also makes for a mild sharpening of the responses of the drive-by-wire throttle. In the RS4's case, brush gently against the accelerator pedal and you'll find yourself hurtling comically onwards. There's one extra trick the button performs. The exhaust note gets spectacularly louder, under full throttle now releasing a soundtrack to rival the napalm bombing sequence from Apocalypse Now.
Simon