William Blair Growth Stock Conference was held on June 21, 2007. Darren Jackson, CFO of Best Buy, presented on the company's performance. He discussed Best Buy's continued leadership in the North American consumer electronics market, with 20% US market share. Best Buy has achieved strong revenue and earnings growth in recent years through expanding its store base, investing in private label brands, and focusing on the customer experience. Looking ahead, Best Buy expects further growth from new store openings, acquisitions, and expanding its international presence while continuing to return value to shareholders through dividends and stock repurchases.

1. William Blair
Growth Stock
Conference
June 21, 2007

2. Darren Jackson
Executive Vice
President – Finance
and Chief Financial
Officer
2

3. Safe Harbor
Cautionary Statement Pursuant to the Private
Securities Litigation Reform Act of 1995
This presentation may contain forward-looking statements,
which are subject to risk and uncertainty. A variety of
factors could cause our actual results to differ materially
from the anticipated results expressed in such forward-
looking statements, including, among other things, factors
listed in our Annual Report on Form 10-K filed with the
SEC on 5/02/07. That 10-K describes additional factors
that could cause actual results to differ materially from
those contemplated by the forward-looking statements
made in this presentation.
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4. North American Leader
Total U.S. Market Share
20%
19%
20.0%
14%
15.0%
13%
10.0%
7%
6%
6%
5.0% 5%
Superstores FY07 End 5% 5%
990 stores
0.0%
Superstores Future
1997 1999 2001 2003 2004 2005 2006
1,200+ stores
Calendar Year
Canadian Market Store Presence
Best Buy U.S. Market Share - Products
24%
23%
22%
20%
47
16% 15%
13%
11%
7%
121
5%
95
Total Home Computing/ Music Appliances
FY02 FY07
4 Theater Dig. Imag.
Based on
2001 Market Share 2006 Market Share Calendar Year

5. History of Growth
ROIC2
Diluted EPS1 21% +4 pts
CAGR 22%
$2.79
21%
20%
19%
$2.27
17% 16%
$1.75
$1.44
$1.11
$1.07
FY02 FY03 FY04 FY05 FY06 FY07
FY02 FY03 FY04 FY05 FY06 FY07
2Fiscal
years 2002 thru 2005 have not been adjusted for FAS 123
1 Pro-forma adjusted for FAS 123 expense
expense
FY07 Results
Revenue Growth 15%
($ in billions)
CAGR
Total revenue growth 16%
$35.9
$30.8
$27.4
Comp revenue growth 5.0%
$24.5
$20.9
$17.7
Operating income % +23 bps
Diluted EPS growth 23%
Market share 21%
FY02 FY03 FY04 FY05 FY06 FY07
5

6. Fiscal 2008
First Quarter: Annual Guidance:
• Revenue of $7.9 billion • Revenue of $39 billion
• Comparable store sales • Comparable store sales
gain of 3.0% gain of 3% to 5%
• Gross profit pressure • Nominal improvement in
operating income rate
• SG&A rate flat
• EPS of $2.95 to $3.15
• Repurchase $412 million
of common stock • 130 New stores:
– 95 United States
– 35 International
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7. Investing for the Future
Core Business Growth Direct Shareholder
Opportunities Returns
• New stores • Acquisitions to provide • Dividend
new:
• Information technology • Stock repurchase plan
– Capabilities – Increased activity in
• Private label
– Customers first quarter
• Supply chain
– Markets
• Customer experience
– Vendor relationships
• Services
• Expanding international
presence
Investing in all areas of the business
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8. Customer Centricity: Our Growth Lens
Ne
ss
w
e
C
in
us
us
to
B
m
re
er
Co
s
&
Fo
rm
Customer
at
Experience
s
New Markets
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9. Brian Dunn
President and Chief
Operating Officer
9

10. Winning with Customers and Employees
76
Total U.S. Market Share
Customer Satisfaction
20%
19%
20.0%
#1 Driver of Improvement:
Quality of Interaction with
Employees 14%
15.0%
13%
72 72
71
10.0%
7%
6%
6%
5.0% 5%
5% 5%
0.0%
2003 2004 2005 2006
1997 1999 2001 2003 2004 2005 2006
Source: American Customer Satisfaction Index
Fourth Quarter Scores – 2/20/07 (www.theacsi.org) Calendar Year
Reward Zone = 20 million members Retail Turnover
81%
69%
67%
$ Billion
FY05 FY06 FY07
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11. Growth in Core Business
Services
Full Solutions
New Formats
Private Label
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12. New Markets = New Growth
$300B
$100B
$80B
China
$50B
$120B Small
Businesses
Services
Market
North
Potential
American
CE Market
Market sizes are internal estimates.
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13. Technology is Not Just a Lifestyle…
It is the infrastructure of life.
HDTV
Mobile Phone
Home Network
Camera Phone
DVR
Internet Access
Game Console Digital Camera
Broadband
Multi-PC
Household
Desktop Computer
Laptop Computer
Satelite Radio PDA
MP3 Player
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14. Your
Questions
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