From their site:

2007 marks 25 years since the opening of the Boilerhouse, the original
incarnation of the Design Museum. To celebrate this significant anniversary, as
plans are being made for a major expansion programme, the Design Museum
has invited 25 designers and individuals with an interest in design, each to select
an object that they believe represents the best, or the most characteristic design
of the period.

From the 1983 Alessi Whistling Kettle, to the 2001 iPod designed by Jonathan
Ive for Apple, the 25 selected designs, representing the best of industrial design,
graphics, furniture, and fashion, designed or first manufactured between 1982
and 2007, will be exhibited at the Design Museum in 25/25 – Celebrating 25
Years of Design from 29 March to 22 June 2007. The exhibition will offer a
fascinating overview of the most important moments and developments in
design during this period, as well as an insight into the thoughts of these key
designers and design commentators, including Terence Conran, founder of the
Boilerhouse, fashion designer Paul Smith, designers David Mellor, Jaime Hayon,
and the Design Museum’s Director Deyan Sudjic.

Other selectors include architect Richard Rogers and designer Ab Rogers,
industrial designer Dieter Rams, product designers Richard Seymour and Dick
Powell of SeymourPowell, world renowned graphic designer, visual artist, and
computer scientist John Maeda, and Dutch designer Maarten Baas.

The Design Museum is located at Shad Thames, London SE1 2YD, and is open from 10am-5:45pm daily. For more information on the museum, please visit its site. Information on advanced booking for the 25/25 event can be found at Ticketweb.